2 ms·

> heat pump that would just pump the heat out of the soup and into a cold room. You already have one, it's your fridge ;)

• dopylitty 3y ago
  Right! The problem is before the heat gets to the room it sits in the milk for a while and raises it to temperatures where bacteria like to be.
  • brnt 3y ago
    The fastest way to cool it is to put the pan in a sink with cold water. But since that water is probably freshly tapped and thus cold, you're not really regaining heat, but rather warming the outside (if you then flush it). But I find fridges are pretty good at what they do. If it fits, you can put it in the freezer for half an hour first.