because there is very little air pressure up that high in the atmosphere.
less than 100oC.
No cause you just cant it wont taste right
Sometimes you boil the lids and sometimes you don't. If you are canning with either a hot water bath or in a pressure cooker, you do not need to boil the lids. If you are canning something that is put into the jar hot and is not going to be processed in the the bath or pressure cooker, you boil the lid to soften the rubber in the lid that forms the seal.
Yes it could. It needs to be heated under pressure and for the increase in temperature required, a pressure cooker will be more than enough.
The boiling point of water changes with altitude. While it boils at 100C at sea level, at the summit of Mount Everest water would boil at a lower temperature of 72C.
can i boil potatoes in my halogen cooker
my book says 10 hours on high
Reduce the air pressure it exists in.The lower the pressure the lover the temp needed to boil it. That's why a cup of tea on top of mount Everest is just not too hot.
Because the air pressure is lower then at sealevel, the boiling temperature of the water is lower. Unless you have a (high) pressure cooker.
If it is fully isolated then, presumably, there is no heat reaching it and so the water in it cannot boil.
Air pressure is higher at sea-level, so a kettle will boil quickly. Air pressure lessens the higher one climbs, so a kettle will take a long time to boil on the top of Mount Everest.
Boiling of a liquid: The temprature at which the vapour pressure of a liquid becomes equal to the external pressure is called boiling point. So the atmospheric or external pressure on mount everest is low. Thats why water boils quickly.