Pesto is a paste that traditionally consists of crushed garlic, European pine nuts, coarse salt, basil leaves, and hard cheese such as Parmesan or pecorino sardo, all blended with olive oil. It originated in Genoa, the capital city of Liguria, Italy.

A food paste is a semi-liquid colloidal suspension, emulsion, or aggregation used in food preparation or eaten directly as a spread. Pastes are often highly spicy or aromatic, are often prepared well in advance of actual usage, and are often made into a preserve for future use. Common pastes are some fruit preserves, curry pastes, and nut pastes. Purées are food pastes made from already cooked ingredients.