Vinegar

Sheep's or field sorrel. This is a sort of wild sorrel, commonly used in salads and soups. The leaves are small and shaped like baby spinach leaves, smaller than sorrel found elsewhere in Europe.

Citric acid

Sheep's or field sorrel. This is a sort of wild sorrel, commonly used in salads and soups. The leaves are small and shaped like baby spinach leaves, smaller than sorrel found elsewhere in Europe.

A cheese from Crete (PDO).

Acid (adjective)

Boxthorn. A plant of the tomato family. It has small, oval leaves that are used to flavour Cantonese soups.