Pressure Cooker Cooking Time Calculator

Pressure cooker cooking times

When a pressure cooker seals, the steam has nowhere to go, so the pressure inside climbs to roughly 70 kPa (0.7 bar) above atmospheric. That pushes water's boiling point up to about 118-120 C. Reaction rates roughly double for every 10 C above 100 C, so cooking times fall 50-70 % next to an open pot. Dry beans are the textbook case: around 30 min under pressure where an open pan would simmer for 2 h.

Piece size, density and starting temperature all play in too. Big chunks of tough meat like osso buco or brisket still want 40-60 min, while delicate vegetables can be done in 2-4 min. With high temperature and steam forcing its way into the tissue at the same time, connective tissue (collagen) gelatinizes far faster than it would in a stovetop braise.

Applications

Brazilian household staples lean on it heavily (feijao, mocoto, dobradinha), and commercial kitchens use it for stocks, beans, chickpeas and tough cuts. Small domestic cookers, under 100 L, fall outside NR-13 inspection rules, though the regulation still covers industrial autoclaves and the larger food-service pressure vessels. Stick to the manufacturer's max-fill line, usually 2/3, and keep the pressure valve clean.

FAQ

Why does pressure cooking save so much time? Going 20 C past the open-pot boil roughly quadruples the chemical reaction rates, and the steam reaches into tissue that simmering water never gets to.

Should I count the come-up time? No. The times here start once the valve begins jiggling, meaning full pressure. The 5-15 min it takes to get there is on top of that.

Natural release or quick release? For meats and beans, let the pressure drop on its own so nothing splits. For vegetables and pasta, release it fast to stop the cooking right away.