Botanical atlas

Barberry

Berberis vulgaris

For centuries, European hedgerows were dotted with barberry bushes whose scarlet berries were gathered each autumn for preserves, cordials, and sharp little jams that cut through rich winter food. In Persian kitchens the dried berries became zereshk, the ruby flecks studding zereshk polo, prized as much for their tang as for the old belief that a sour fruit helped a heavy meal settle. European folk herbalists also turned to barberry, particularly its bright yellow root bark, as a classic bitter, traditionally used to stir a sluggish appetite and support the liver the way dandelion root or gentian might. It is a plant that has always lived a double life, part pantry staple, part apothecary shelf.

Safety.

Unripe berries, bark, and root contain berberine, which is toxic in quantity and can cause vomiting or low blood pressure. It should be avoided in pregnancy, breastfeeding, and in infants (linked to newborn jaundice), and it can interact with blood thinners, blood pressure drugs, and diabetes medication. Only fully ripe berries are suitable for everyday culinary use.