I saw on the box of a frozen meal, remove when piping hot.
What does piping mean in terms of hot food?
What Girls Said 2
What Guys Said 4
It's like... if something is "piping hot" then it's really hot. Kinda the same way as saying that.0
Very very hot - With frozen food make sure it is cooked all the way through0
I believe the expression comes from the whistle on a kettle. So it would mean boiling hot.0