Pistou Pistou Pistou (Provençal: "pisto" or "pistou" , ), or pistou sauce, is a Provençal cold sauce made from cloves of garlic, fresh basil, and olive oil. It is somewhat similar to the Ligurian sauce pesto, although it lacks pine nuts. Some modern versions of the recipe include grated parmesan, pecorino or similar hard cheeses. In the Provençal dialect of Occitan, "pistou" means "pounded". The sauce is derived from the Genoese pesto, which is traditionally made of garlic, basil, pine nuts, grated Sardinian Pecorino, and olive oil, crushed and mixed together with a mortar and pestle. The key difference between pistou
Pesto through a circular motion of a wooden pestle. This same Latin root, through Old French, also gave rise to the English noun "pestle". Strictly speaking, "pesto" is a generic term for anything that is made by pounding; that is why the word is used for several pestos in Italy. Nonetheless, "pesto alla genovese" ("Genoese pesto") remains the most popular pesto in Italy and the rest of the world. Pesto is thought to have two predecessors in ancient times, going back as far as the Roman age. The ancient Romans used to eat a similar paste called moretum, which was made