pistou

enUK

pis·tou

P0332400 (pē-sto͞o′)n.1. A sauce made of garlic, basil, olive oil, and often Parmesan, used on pasta or in soups and stews.2. A soup or stew flavored with this sauce.
[French, from Provençal, from pestar, to crush, from Old Provençal, from Late Latin pistāre; see piston.]

pistou

(piːsˈtuː) n1. (Cookery) a type of sauce from Provence, made from olive oil, basil, garlic, tomatoes, and cheese2. (Cookery) a type of rich vegetable soup containing or flavoured like pistou sauce