According to my translator widgit, it's "laisser refroidir"
"Recette" is recipe translated into French.
'chouette' or 'super'
Soyez cool
c'est cool
Bonne recette
Scald milk means to heat it to just before it boils. Hot enough that if you got it on yourself, it would scald you. Then you usually let it cool to the point it is just warm. The recipe should say if you are to let it cool completely.
Tu es cool.
To say "let's talk" or "let's speak" in French you would say parlons.
Hyper-cool
je suis cool !
In French, you would say "Parlons français" to mean "Let's speak French."
"Let's not" in French is Il ne faut pas