When I use pressure cooker, hissing sounds are produced and vapour comes out of the vent pipe.

  • 4
    That might just be the way it’s designed - especially the vapour venting.
    – Lawrence
    Dec 31 '18 at 14:26
  • 2
    That;s quite normal - so long as you've turned down the heat once it starts hissing, which reduces the noise a bit
    – Bamboo
    Jan 1 '19 at 1:30

Make sure the vent pipe is clean - when it's gets left-overs from previous cooking it starts making more noise - and the noise gets stranger and more high pitched.


To a certain extent, noise is unavoidable.

The pressure cooker must be able to vent, to avoid building up too much pressure. It vents through a small hole so it can build up some pressure, this is what makes a pressure cooker work (high pressure means a higher temperature).

If the vent gets larger, you'll get less noise but the pan won't be able to build pressure any more, making it pointless to use one instead of a normal pan.

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