Rouille

Rouille is a thick sauce made by emulsifying garlic, saffron, and red pepper with olive oil. Its name means “rust” in French, referring to the tone evoked by its color. It is an essential accompaniment to bouillabaisse, the Provençal fish soup.

Where It’s Used

“Spread rouille sauce on a slice of toasted bread and dip it into fish soup.”