According to my translator widgit, it's "laisser refroidir"
"Recette" is recipe translated into French.
c'est cool
Soyez cool
Tu es cool.
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.
Bonne recette
Hyper-cool
je suis cool !
"Let's talk" translated into French is "Parlons-en".
In French, you would say "Parlons français" to mean "Let's speak French."
'chouette' or 'super'
C'était cool