PS. Advantage as well as disadvantages of the Stainless Steel instead of aluminium
Best answer:
Answer by Paul in San Diego
The advantage of a pressure cooker is that it will cook things faster at a higher heat without burning. If you boil a pot of water, the water will never get hotter than the boiling point (212 F or 100 C). Before it can, it turns to steam and escapes. If you try to superheat the water (keep it on high heat after it's started boiling), it will just boil over until all the water is gone.
With a pressure cooker, the pressure prevents the water from boiling at the normal boiling point. So, the temperature can be increased beyond that point without the pot boiling over (it's sealed under pressure, hence the name). This allows things to cook faster without drying out or burning.
I don't know what a disadvantage would be, except that it's more expensive than a regular pot.
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