Choosing
Pressure cookers: the size, the settings and the seal
A pressure cooker is the one piece of cookware that is also safety equipment. Three things decide a good one: a capacity that suits your cooking, settings published as something you can understand, and a seal you can still buy in five years. Everything else is convenience.
By Jean-Benoit Buisson
Five cookers, and the three questions that separate them.
The one that publishes its temperatures
The WMF 4.5 liter, Ø 22 cm (8.7 in), 18.3 cm (7.2 in) high, with two settings at 110 °C (230 °F) and 119 °C (246 °F) and a large cooking signal. Publishing the settings as temperatures rather than symbols is the clearest specification in this hub.
The one with the longest durability claim
The Tefal 6 liter, 22 cm (8.7 in), 18/10 stainless, two cooking settings, and stated tested to a thirty-year life. That is the longest such claim anywhere in this catalog.
The Elo 18 cm (7.1 in), 18/10 stainless, with a 1.0 mm (0.04 in) wall and a 5.0 mm (0.20 in) total base, and automatic pressure regulation. Wall and base thickness published together is rare, and the base is what stops food catching under pressure.
The one with a basket included
The Falkenstein 6 liter, with a Quickturn lid mechanism, a cooking signal and a steaming basket included. The basket is what makes a pressure cooker also a steamer.
The one built around its valve
The Hawkins, stainless, with a shielded safety valve and a pressure-locked safety lid. A pressure-locked lid cannot be opened while there is pressure inside, which is the mechanism that matters most.
Before you buy any of them
Find the replacement seal for that model and check it is still sold. A cooker whose seal has been discontinued is a pot.
The questions that come in
What size do I need?
A pressure cooker is filled to two-thirds at most, and less for anything that foams. A 4.5 liter cooker is a three liter meal; six liters feeds four or five comfortably.
How often does the seal need replacing?
Makers commonly say every one to two years, or as soon as it hardens, cracks or stops sealing. Check that a replacement seal is available for your model before you buy the cooker — this site lists seals for WMF, Silit, Fissler and Tefal.
Why do published temperatures matter?
Because "setting 1" and "setting 2" tell you nothing. The WMF here publishes 110 °C (230 °F) and 119 °C (246 °F), which is the difference between gentle cooking and the fast setting, expressed as something you can reason about.
Stovetop or electric?
Stovetop reaches pressure faster and gives more control; electric is programmable and can be left. It depends on how you cook.
Are pressure cookers safe?
Modern models have several independent safety systems. The manufacturer’s instructions for your model are the thing to follow.
How much can I put in?
Never above the maximum fill line, which is lower than most people expect. It is a safety limit, not a suggestion.
What maintenance does it need?
Cleaning the valve after every use and replacing the gasket when it hardens. Both are safety matters rather than longevity ones.
What is it best at?
Pulses and tough cuts. Dried beans without soaking overnight is the change most people notice first.
Is a multicooker a good pressure cooker?
It does the job alongside several others, generally less quickly than a dedicated stovetop model. That trade is the whole question.