Unpeeled garlic cloves in French / Belgian cooking?

I am looking through some recipes that came with a French pressure cooker I just bought (in Belgium). It seems most of the recipes that use garlic ask for one or two upeeled garlic cloves (ongeschilde teentjes knoflook). Is this really a thing, or am I misunderstanding something? If you include unpeeled garlic cloves, do you still chop off the end that used to connect to the heart?