Daniel sent us this one — he's asking about the Instant Pot, specifically whether Instant Pot the company was the first to electrify the pressure cooker, how the sealing technology actually works compared to manual stovetop models, and who else is building these things today. And beneath all that, there's this tension between the fact that pressure cooking has been terrifying home cooks for decades and the way Instant Pot somehow became the kitchen appliance that turned into a verb. You don't hear people saying "I Crock-Potted that stew." You hear "I Instant Potted it." So what made this one stick?
The timing's interesting because as of right now, Instant Pot's market share has dropped from about seventy percent in twenty eighteen to around forty-five percent. The landscape has completely shifted. So we're looking at this technology at the exact moment when the dominant brand is losing its grip, which makes it the perfect time to ask what actually made it special in the first place.
The verb-ification of a brand is the corporate equivalent of being knighted. You've arrived, and simultaneously you've lost control of your trademark.
Which is the musical equivalent of beige wallpaper that everyone suddenly decided they needed in their kitchen. But let's start with the physics, because the whole thing hinges on one deceptively simple problem.
Boiling water isn't hot enough.
At sea level, water boils at one hundred degrees Celsius. That's your ceiling. You can turn the burner up as high as you want — the water won't get hotter, it'll just boil away faster. So if you're cooking dried chickpeas or a tough cut of beef shank, you're stuck at one hundred degrees for however many hours it takes for collagen to break down and starches to gelatinize.
That's the moment where every cookbook says "simmer for three to four hours" and you quietly decide to order pizza instead.
Pressure cooking solves this by sealing the pot so steam can't escape. As pressure builds, the boiling point rises. At fifteen PSI above atmospheric — which is the standard for most home pressure cookers — water boils at about one hundred twenty-one degrees Celsius. That twenty-one degree difference cuts cooking times by sixty to seventy percent. A chickpea that takes three hours to simmer takes about thirty-five minutes under pressure.
The physics is straightforward. The engineering of making that safe in someone's kitchen is where things get interesting.
It took nearly three hundred fifty years to get it right. Denis Papin invented the steam digester in sixteen seventy-nine. It was essentially a cast iron cylinder with a tightly fitted lid and a safety valve. He demonstrated it to the Royal Society by cooking bones until they were soft enough to eat. But it was a laboratory curiosity, not a kitchen tool.
"Come for the bone meal, stay for the potential shrapnel injuries.
Stovetop pressure cookers went mainstream in the nineteen thirties and forties — the National Pressure Cooker Company, then Presto. But they had two problems that never fully went away. One, people were terrified of explosions. And two, you had to babysit the heat source. You couldn't just set it and walk away, because if the pressure got too high, you had to adjust the burner manually.
Explosions weren't just a theoretical fear. If the pressure regulator got clogged and the backup safety plug failed, you had a bomb on your stove.
Which is why my grandmother refused to have one in the house. She'd seen one blow in the nineteen fifties and the lid embedded itself in the ceiling. That's not an urban legend — those failures really happened with early models.
The question the prompt is really asking is: how did we go from ceiling-lid to "I'll start the chili while I'm at work"?
The first thing to understand is that Instant Pot was not the first electric pressure cooker. Not even close. The first consumer electric pressure cooker was actually a Rival Crock-Pot attachment in the nineteen seventies. Sunbeam, Presto, and Cuisinart all sold standalone electric models through the nineties and early two thousands. But none of them achieved mass adoption.
What was different? If the hardware existed for decades, what did Robert Wang actually invent?
Robert Wang was a former Nortel engineer in Ottawa — Nortel was a big Canadian telecom company that went bankrupt in two thousand nine. He founded Instant Pot in two thousand eight, and his key insight wasn't "let's electrify the pressure cooker." It was "let's put a microcontroller in it and give it a brain.
The innovation wasn't the heating element. It was the feedback loop.
Here's how it works. Inside the Instant Pot, there's a thermistor — basically a temperature-sensitive resistor — that reads the internal temperature roughly ten times per second. That data goes to a microcontroller running a fuzzy logic algorithm. The algorithm compares the actual temperature to a target temperature curve for the selected program. If you selected "beans," it's aiming for a different curve than "rice" or "soup.
"fuzzy logic" here doesn't mean the controller is confused. It means it's making decisions based on ranges and probabilities rather than rigid if-then rules.
Traditional logic would say "if temperature is below one hundred fifteen, turn the heater on. If it's above one hundred eighteen, turn it off." Fuzzy logic says "the temperature is a bit below target, and it's been dropping slowly, so increase the duty cycle by thirty percent." It's more adaptive.
The duty cycle being how much time the heating element spends on versus off.
The microcontroller adjusts that duty cycle continuously. If the pot is approaching the target pressure too quickly, it backs off. If it's losing pressure, it increases heat. The user doesn't have to touch anything. That's what eliminated the babysitting problem.
That's why earlier electric pressure cookers failed. They were basically a hot plate attached to a pressure pot. No intelligence, no self-regulation.
They had a bimetallic thermostat at best — a mechanical switch that clicked on and off at a set temperature. You'd get pressure swings of three or four PSI, which meant inconsistent cooking. The Instant Pot's thermistor and microcontroller loop keeps pressure within about half a PSI of the target.
That's the brain. What about the part that keeps it from redecorating the ceiling?
The safety engineering is where the Instant Pot really diverges from stovetop models. A typical stovetop pressure cooker — say a Presto six-quart stainless steel model — has about three safety features. There's the pressure regulator weight that sits on the vent pipe and jiggles to release excess steam. There's a backup blowout plug, usually made of rubber, that will pop out if the pressure gets dangerously high. And there's a lid lock that prevents you from opening the lid when there's pressure inside — usually a simple mechanical interlock.
Which sounds adequate until you hear what the Instant Pot has.
The Instant Pot Duo has over ten built-in safety mechanisms. The most critical ones are: first, a mechanical interlock pin that physically prevents the lid from being rotated open whenever the pressure is above about half a PSI. Second, a pressure release valve that automatically vents if the pressure exceeds fifteen point five PSI. Third, a temperature fuse that cuts all power if the internal temperature reaches one hundred fifty-two degrees Celsius — that's about three hundred six Fahrenheit. Fourth, a thermal cutoff that disables the heating element if the unit overheats for any other reason.
The microcontroller itself is a safety feature, because it's constantly monitoring and can cut power before any mechanical safety even needs to engage.
In a stovetop model, if you walk away and the heat is too high, the regulator weight vents steam and makes a racket, but it's still relying on you to hear it and turn down the burner. The Instant Pot will detect the overpressure condition and cut the heating element before it gets to that point.
The failure modes are fundamentally different. A stovetop pressure cooker fails mechanically — a gasket blows, a plug pops, a weight clogs. An electric model can fail electronically — a thermistor drifts out of calibration, the microcontroller crashes, a solder joint fails on the control board.
That's the misconception a lot of people have. They assume electric is automatically safer because it's "smart," but you're trading mechanical failure modes for electronic ones. The difference is that the Instant Pot has enough redundancy that no single electronic failure should create a dangerous condition. The temperature fuse, for example, is purely mechanical — a fusible alloy that melts at one fifty-two Celsius regardless of what the microcontroller is doing.
It's defense in depth. The microcontroller is the first line, the mechanical interlocks and valves are the second, and the thermal fuse is the last resort that doesn't care about software at all.
That's the architecture Wang's team patented. US Patent eight million eight hundred eighty-one thousand six hundred fifty-one, filed in twenty eleven, expiring in twenty thirty-one. It covers the basic architecture of a microcontroller-controlled electric pressure cooker with multiple safety redundancies.
Let's talk about the sealing mechanism specifically, because that's where the engineering gets genuinely elegant.
This is the floating seal versus the clamped seal. In a stovetop pressure cooker, you have a gasket — usually silicone or rubber — that sits between the lid and the pot. The lid is mechanically clamped to the pot using a bayonet or screw mechanism. You physically force the lid down against the gasket, compressing it to create the initial seal. Then as pressure builds, the internal pressure pushes the lid upward, which compresses the gasket even more against the rim of the pot. The seal actually gets tighter as pressure increases.
Which is clever, but it also means the lid is under significant mechanical stress. If the clamps fail, the lid becomes a projectile.
The Instant Pot uses what's called a floating seal. The silicone gasket sits in a groove in the lid, and the lid itself is not mechanically clamped to the pot. You rotate the lid into position, and a spring-loaded pin drops into a slot — that's your alignment and basic lock. But the lid isn't being forced down. Instead, as pressure builds inside, the lid is pushed upward, and that upward movement compresses the gasket against the rim of the inner pot.
The seal is created by the pressure itself, not by you cranking down on a clamp.
And there's a floating valve — a small metal pin in the lid — that only rises to seal the vent once sufficient steam pressure builds. Before that, steam can escape freely. That's why when you first start an Instant Pot, you'll see steam coming out of the valve for a minute or two before the pin pops up and seals everything. That floating valve is what enables the lid interlock. The pin physically blocks the lid from being rotated open.
The floating valve works like a one-way door. Steam can push it up, but you can't push it down from the outside. And while it's up, the lid is mechanically locked.
The downside — because there's always a downside — is that the floating seal relies entirely on the gasket being in good condition. On a stovetop pressure cooker, if the gasket is slightly worn, you can compensate by clamping the lid down tighter. On an Instant Pot, if the gasket is worn or not seated properly, the pot simply won't come to pressure. The steam will keep leaking past the gasket and the floating valve will never rise.
Which manifests as the dreaded "burn" error on the display, because the pot keeps applying heat trying to reach pressure, the liquid boils away, and the temperature sensor on the bottom detects that the pot is overheating.
That's actually a safety feature masquerading as an annoyance. The burn error means the system detected a condition that shouldn't happen and shut down rather than continuing to heat a dry pot.
Like adopting a feral cat. It seems like a problem but it's actually a feature with sharp edges.
Let's talk about the gasket material, because this is where the material science gets interesting. Most electric pressure cookers use food-grade silicone gaskets. Silicone is chosen over rubber for several reasons. It doesn't degrade from repeated steam exposure, it doesn't impart taste to food, and it has a temperature range from about negative forty Celsius to two hundred thirty Celsius, which covers everything from freezer storage to pressure cooking.
Silicone has a permeability problem.
Over long cooking times — three hours or more — silicone is slightly permeable to steam. Water molecules can actually migrate through the gasket material. It's a tiny amount, but on a very long cook, you can lose enough steam to affect the pressure. That's why some high-end stovetop models from companies like Fissler use PTFE-coated gaskets. PTFE — that's Teflon — is less permeable to steam than silicone.
The tradeoff being that PTFE gaskets are more expensive and harder to replace.
A Fissler stovetop gasket costs about twenty-five dollars and needs replacement every five to seven years. An Instant Pot silicone ring costs about eight dollars and should be replaced every twelve to eighteen months.
The silicone ring absorbs odors. Curry, chili, anything with strong aromatics — the gasket will hold onto those smells and potentially transfer them to the next thing you cook.
Which is why serious Instant Pot users often keep two gaskets — one for savory dishes and one for sweet or neutral things like yogurt and cheesecake. The odor absorption isn't a safety issue, it's purely cosmetic, but it's one of those material properties that nobody tells you about until you've made vanilla yogurt that tastes faintly of cumin.
The ghost of chili past.
The sealing technology is fundamentally different from stovetop models, and it's clever, but it's also a single point of failure in a way that clamped stovetop lids aren't. If your Instant Pot gasket isn't seated perfectly, nothing works. If your stovetop gasket is slightly off, you can usually muscle through.
Let's shift to the competitive landscape, because the prompt also asked who else is making these things now. And as of twenty twenty-six, it's a crowded field.
Instant Pot dominated for about a decade. At their peak in twenty eighteen, they had roughly seventy percent of the electric pressure cooker market in North America. But their patent, while broad, wasn't impossible to design around, and competitors figured out that you could use different sensor configurations and control algorithms to achieve the same result without infringing.
The real moat wasn't the patent anyway. It was brand trust and the cookbook ecosystem.
Over a thousand Instant Pot-specific cookbooks had been published by twenty twenty. Facebook groups with millions of members. Recipe blogs dedicated entirely to the device. That's the kind of network effect you can't patent.
Cookbooks don't stop a competitor from selling a better machine.
That's exactly what happened. Let me run through the major players. Breville's Fast Slow Pro — that's their electric pressure cooker — uses a dual sensor system. It has both a temperature sensor and a dedicated pressure sensor, rather than inferring pressure from temperature like the Instant Pot does. And it has a solenoid-actuated steam release valve.
Solenoid-actuated meaning an electromagnet opens and closes the valve, rather than you manually turning a knob.
You press a button on the control panel, and a solenoid physically moves the valve to release steam. That reduces burn risk significantly because your hand never goes near the steam vent. The Instant Pot requires you to manually turn a valve or, on some models, press a button that mechanically opens the vent — but your hand is still right there above the steam column.
Breville's system can be set to natural release or quick release programmatically. You can program a recipe that pressure-cooks for twenty minutes, then does a ten-minute natural release, then vents automatically.
Ninja took a different approach with their Foodi line. They combined pressure cooking with air frying in a single unit. The lid has a heating element and a fan for air frying, and there's a separate pressure cooking lid. It's basically two appliances in one housing. The engineering challenge there is that you need a lid that can seal for pressure but also has an integrated heating element and fan assembly that won't be damaged by steam.
Which sounds like the kind of engineering compromise that does two things adequately rather than one thing well.
The reviews are actually quite positive, but the unit is physically large and the dual-lid system means you're storing an extra lid somewhere. Cosori has gone the connectivity route with their Smart Pressure Cooker — Wi-Fi, app control, remote monitoring, recipe downloads. Xiaomi's Mijia Smart Pressure Cooker, which is mainly available in China, uses a linear motor to actuate the pressure release valve automatically. It's a small electric motor that physically moves the valve rather than a solenoid.
A linear motor in a pressure cooker. We've come a long way from the jiggling weight.
Notably, the traditional stovetop manufacturers — Fissler, Kuhn Rikon, WMF — have not entered the electric market. They continue to make high-end stovetop pressure cookers and maintain that their mechanical designs are more durable and will outlast any electronic appliance.
Which is probably true. A well-made stovetop pressure cooker from Fissler will last thirty years. An Instant Pot's control board will eventually fail, and at that point it's e-waste.
The tradeoff between durability and convenience. A Fissler stovetop model costs two hundred to three hundred dollars and lasts decades. An Instant Pot costs eighty to a hundred twenty dollars and might last five to eight years. The cost per year is actually similar, but the value proposition is completely different.
The prompt mentioned legumes and pottages specifically — foods that are prohibitively slow to cook. Those are exactly the use cases where an electric pressure cooker shines, because they require long, steady pressure without adjustment.
Set and forget is the killer feature. For beans, stews, bone broths, anything that needs an hour or more of cooking time, the microcontroller means you don't have to be in the kitchen at all. For stovetop models, you really shouldn't leave the house while they're running.
Let's talk about what's coming next, because the technology isn't standing still. The plan mentions induction-heated pressure cookers.
Midea released one in twenty twenty-five. Instead of a resistive heating element in the base, it uses an induction coil that generates a magnetic field to heat the pot directly. This eliminates the heating element entirely and allows for much more precise temperature control because you're heating the pot itself, not a heating element that then transfers heat to the pot.
Fewer thermal interfaces means less lag in the control loop.
The thermistor responds faster because the heat is being generated in the pot wall itself, not conducted through a separate element. And at LG's CES booth in January twenty twenty-six, they showed a prototype pressure cooker with a camera inside the lid — computer vision that claims to identify ingredients and adjust cooking parameters automatically.
I'm trying to imagine what a camera inside a pressure cooker sees. A very foggy lens, mostly.
They're apparently using a heated lens element to prevent fogging, which is the kind of detail that tells you this is still firmly in prototype territory. But the direction is clear. These devices are getting smarter, more connected, and more autonomous.
Which raises the question: at what point does a pressure cooker stop being a pressure cooker and become a kitchen robot that happens to use pressure?
The line between a pressure cooker and a multi-cooker is already blurring. The Instant Pot itself is marketed as a seven-in-one or ten-in-one device — pressure cooker, slow cooker, rice cooker, steamer, sauté pan, yogurt maker, warmer. The Ninja Foodi adds air frying. The next generation will add induction heating, computer vision, and AI recipe adaptation.
AI recipe adaptation meaning the device knows your altitude, the ambient humidity, the age of your dried beans, and adjusts cooking time accordingly.
Altitude is actually a significant factor that most people don't think about. At five thousand feet, water boils at about ninety-five degrees Celsius instead of one hundred. A pressure cooker still works — it's still raising the boiling point — but the absolute temperature at a given PSI is lower. So high-altitude cooking requires longer times, and most recipe books don't account for it. A smart pressure cooker with a barometric pressure sensor could adjust automatically.
That's useful, unlike the Wi-Fi-connected toaster that tells you when your toast is done.
The Wi-Fi on a pressure cooker is mostly a gimmick for most users. But the underlying sensor fusion — temperature, pressure, humidity, altitude — that's real engineering value.
Let me pull us toward some practical takeaways, because we've been deep in the engineering and I think listeners will want to know what to actually do with this information.
First, if you own an Instant Pot or any electric pressure cooker, replace the silicone gasket every twelve months. A worn gasket is the number one cause of burn errors and pressure loss. You can test your gasket by taking it out and laying it on a flat surface. If it doesn't lie perfectly flat, if it's wavy or misshapen, replace it. They cost about eight dollars.
If you do a lot of heavily spiced cooking, replace it every six months. The material fatigues faster with repeated exposure to acidic ingredients and oils.
Second, always perform the water test before first use of any pressure cooker, electric or stovetop. Add two cups of water, run a full pressure cycle, and verify that the lid locks, the pressure valve operates correctly, and the unit comes to pressure and releases normally. This catches manufacturing defects before you've got a pot full of food at stake.
Third, when you're choosing between electric and stovetop, think about your actual cooking patterns. Electric is better for set-and-forget — soups, beans, stews, anything that needs an hour or more. The microcontroller does the work. Stovetop is better for recipes that require high-heat searing and rapid pressure changes, because you can manually adjust the burner.
Stovetop models also reach pressure faster because you can crank the heat initially and then reduce it. An electric model heats at a fixed rate determined by the wattage of the heating element, typically a thousand to twelve hundred watts.
If you're in the market for an electric pressure cooker right now, look for two specific features. A dedicated steam release button that keeps your hand away from the vent, and a stainless steel inner pot rather than aluminum or non-stick coated.
The non-stick coatings degrade at pressure cooker temperatures. They're not designed for sustained exposure to one hundred twenty degrees Celsius in a wet environment. They'll start to flake after a year or two, and then you're eating whatever that coating was made of.
Which is never the secret ingredient anyone wants.
Stainless steel is inert, durable, and if food sticks, you can scrub it with steel wool without worrying about damaging a coating.
To circle back to the prompt's core question: was Instant Pot the first to electrify the pressure cooker? The Rival Crock-Pot attachment did it in the seventies, and several companies sold electric models through the nineties and early two thousands. What Instant Pot did was add a microcontroller and fuzzy logic control that made the device autonomous and safe enough for the mass market.
The sealing technology is fundamentally different. Stovetop models use a mechanically clamped gasket seal where you physically compress the gasket by locking the lid. The Instant Pot uses a floating seal where the pressure itself creates the seal by pushing the lid upward against the gasket. It's simpler to manufacture and clean, but it's entirely dependent on the gasket being in good condition.
The competitors today — Breville, Ninja, Cosori, Xiaomi — are differentiating on features like dual sensors, solenoid valves, combination cooking modes, and connectivity. But the basic architecture that Robert Wang patented is still the foundation most of them are building on.
The next five years are going to be interesting. Induction heating eliminates the traditional heating element. Computer vision promises automatic ingredient recognition. AI recipe adaptation could adjust for altitude, humidity, and ingredient freshness automatically.
The pressure cooker is slowly turning into a kitchen robot. Whether that's a good thing probably depends on how much you enjoy the act of cooking versus just wanting the result.
I think there's room for both. The Instant Pot didn't kill stovetop pressure cooking any more than the microwave killed the oven. Different tools for different jobs and different cooks.
For the record, if anyone builds a pressure cooker that can identify my chickpeas by sight and cook them perfectly without me doing anything, I'm interested. I'm also skeptical that a camera inside a steam-filled pot is going to see anything useful.
LG seems to think the heated lens solves that. We'll find out when it ships, assuming it ever does. A lot of CES prototypes never make it to production.
The vaporware of the kitchen appliance world.
Literally, in this case.
Now: Hilbert's daily fun fact.
Hilbert: In seventeen twenty-three, a Dutch naturalist exploring Papua New Guinea described bats that navigated in total darkness without collision. He proposed they used a "subtle emanation" from their eyes, missing the discovery of echolocation by roughly two centuries. The manuscript sat unread in a Leiden archive until nineteen eighty-seven.
Two centuries of bats quietly judging us while we argued about eye beams.
The subtle emanation of wrongness.
That's our show. If you have a weird prompt about kitchen technology, food science, or the engineering of everyday objects, send it to prompts at myweirdprompts dot com. We read every one. This has been My Weird Prompts. I'm Corn.
I'm Herman Poppleberry. Thanks to our producer Hilbert Flumingtop. Find us at myweirdprompts dot com.
