Capparis spinosa, the caper bush, also called Flinders rose, is a perennial winter-deciduous plant that bears rounded, fleshy leaves and large white to pinkish-white flowers. The plant is best known for the edible flower buds (capers), often used as a seasoning, and the fruit (caper berry), both of which are usually consumed pickled. the salted and pickled caper bud (also called simply capers) is often used as a seasoning or garnish. Capers are a common ingredient in Mediterranean cuisine, especially Cypriot, Italian and Maltese. The mature fruit of the caper shrub are also prepared similarly, and marketed as caper berries. The buds, when ready to pick, are a dark olive green and about the size of a fresh kernel of corn. They are picked, then pickled in salt, or a salt and vinegar solution, and drained. Intense flavour is developed as mustard oil (glucocapparin) is released from each caper bud. This enzymatic reaction also leads to the formation of rutin often seen as crystallized white spots on the surfaces of individual caper buds.
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