Sous Vide Pork Belly: Times, Temperatures, and Crisping
By Dana Cole | Reviewed by Chef Daniel Pryce
Published · Last reviewed · 3 min read
Key takeaways
- Pork belly is a tough, fatty cut, so it needs a long sous vide hold (often 12 to 36 hours) to turn meltingly tender at your chosen temperature.
- Temperature sets the texture: lower and longer gives a sliceable, silky belly; higher gives a softer, more braise-like result.
- Sous vide adds no browning, so the skin or fat cap is dry and pale until you crisp it hot and fast at the end.
- Pasteurisation depends on time and temperature together, so match a reputable chart for the temperature you choose.
Sous vide pork belly is the cut where time does the heavy lifting: you set a temperature for the texture you want, then hold it for many hours (often 12 to 36) so the tough, fatty belly turns tender, and you crisp the surface hot and fast at the end. This is my favourite cut to cook this way, because the water bath solves the one thing that always tripped me up: getting it tender without drying out the lean stripes.
Why pork belly needs a long cook
Pork belly is a tough, collagen-rich cut, so it needs a long hold to become tender rather than just a brief cook to temperature. Unlike a quick steak, where the meat is “done” in about an hour, belly relies on the second lever of sous vide: time sets tenderness, while temperature sets the doneness and texture. The long, gentle hold breaks down connective tissue and renders the fat without ever pushing the meat past your set point. A common window is 12 to 36 hours, and the first time I ran a belly for a full day I was amazed it came out silky rather than tough, all at the same temperature I started with. For the full mechanism, see how does sous vide work.
Choosing your temperature
Temperature sets the final texture, so pick it for the result you want. A lower temperature held long, around 145°F (63°C), gives a firm, sliceable belly with cleanly rendered fat, good for crisp squares or ramen toppings. A higher temperature, around 158 to 170°F (70 to 77°C), gives a softer, braise-like belly that pulls apart with a spoon. Both work because the long hold does the tenderising at whatever temperature you choose; the heat just decides how loose the meat ends up. Confirm the exact time for your thickness and temperature against a reputable chart, and see our times and temperatures hub for the wider picture.
Matching time to temperature
The time and the temperature work together, so longer cooks suit the lower end and shorter cooks suit the higher end. At a firm 145°F (63°C) you might run 24 to 36 hours for that sliceable texture; at a softer 170°F (77°C) the belly reaches a tender, falling-apart state faster, nearer 12 hours. Time depends on thickness, not weight, so a thicker slab takes longer to come up and tenderise than a thin one. This same time-and-temperature relationship is what keeps the cook safe, because pasteurisation is a function of both together, not temperature alone1. Like ribs, belly rewards patience: the hours are what turn a chewy cut into a tender one.
Crisping the skin or fat cap
Sous vide adds no browning, so the belly comes out cooked but pale, and the skin or fat cap will be soft until you crisp it. Finish it hot and fast: a screaming cast-iron pan, a hot broiler, or a torch will render and crisp the surface in a few minutes2. Pat it bone-dry first, because surface moisture is the enemy of crackling, and keep the heat short so the inside, already perfectly cooked, does not overshoot. Scoring the fat in a shallow crosshatch before cooking helps it render evenly. For technique and tools, see how to sear after sous vide.
Food safety for pork belly
Pork belly is safe sous vide when you respect time and temperature together. Pasteurisation depends on holding the meat long enough at a given temperature, not just reaching it, and the long belly cook makes that easy at typical temperatures. Avoid extended holds below about 130°F (54.4°C), which sits inside the danger zone of 40 to 140°F (4 to 60°C) where bacteria multiply1, and cook to standard safe internal temperatures if you are serving people who are pregnant, very young, elderly, or immunocompromised3. Our food-safety guide covers the detail.
Where to start
Pick a firm slab, set 145°F (63°C), run it overnight and into the next day, then crisp the fat cap hard before serving. If you want a softer, spoonable belly, go higher and shorter. Either way, the bath does the work and the final sear does the drama.
This guide is general information and one cook’s experience, reviewed by a professional chef. Always follow current food-safety guidance for your situation.
Frequently asked questions
How long does pork belly take sous vide?
Because pork belly is a tough, collagen-rich cut, it needs a long hold to become tender, commonly 12 to 36 hours. A shorter cook near the bottom of that window keeps the meat firmer and sliceable; a longer cook near the top gives a softer, more spoonable result. Time sets the tenderness here, not the doneness, so the temperature you choose stays the same whether you run it for 12 hours or 36.
What temperature is best for sous vide pork belly?
It depends on the texture you want. A lower temperature held long, around 145°F (63°C), gives a firm, sliceable belly with rendered fat; a higher temperature, around 158 to 170°F (70 to 77°C), gives a softer, braise-like belly that pulls apart. Both work because temperature sets the texture and the long hold does the tenderising. Always confirm your time against a reputable chart for the temperature you pick.
Do you need to crisp pork belly after sous vide?
Yes, if you want crackling or a browned fat cap. Sous vide cooks the belly through but produces no browning, because the water sits far below searing temperature, so the surface comes out pale and soft. You finish it hot and fast in a screaming cast-iron pan, under a broiler, or with a torch to render and crisp the surface. Pat it very dry first and keep the heat short so you do not overcook the inside.
Can you overcook pork belly sous vide?
You cannot push it past your set temperature, so it will not get more 'done' than the water. But texture does change over a long hold: run it many hours past tender and a belly can turn very soft, almost mushy, especially at higher temperatures. That is why each temperature has a sensible time window. Within that window the extra hours are forgiving; well beyond it the texture suffers.
Is sous vide pork belly safe?
Yes, when you respect time and temperature together. Safety comes from pasteurisation, which depends on holding the meat long enough at a given temperature, not just reaching it. The long belly cook makes this easy at typical temperatures. Avoid extended holds below about 130°F (54.4°C), use reputable charts such as Douglas Baldwin's, and cook to standard safe internal temperatures if you are serving people who are pregnant, very young, elderly, or immunocompromised.
Should you score the skin before cooking pork belly sous vide?
Scoring the skin or fat cap in a shallow crosshatch helps it render and crisp evenly when you finish it, and it lets seasoning reach the fat. Do it before bagging, cutting into the fat but not the meat. Then pat the surface very dry before the final sear or broil; dry skin is what gives you crackling rather than a chewy, leathery surface.
References
- A Practical Guide to Sous Vide Cooking, Douglas Baldwin. ↩
- Crispy Sous Vide Pork Belly, Serious Eats. ↩
- Safe Minimum Internal Temperature Chart, USDA Food Safety and Inspection Service. ↩
Written by Dana Cole. Reviewed by Chef Daniel Pryce.
Our guides are written from personal experience and reviewed by a professional chef for accuracy. Read our editorial policy.