Horchata de chufa: the Valencian tiger nut milk
Valencia, Spain (Moorish-era origin)
The original Valencian horchata — a cold, milky-white drink made from tiger nuts (chufas, Cyperus esculentus), water, and sugar — is one of the most ancient drinks in the Mediterranean and a direct continuation of the Moorish tradition of nut milks and refreshing cold drinks (bebidas refrescantes). The tiger nut, despite its name, is a small tuber grown in the sandy soils of Valencia's La Albufera region — the same ecology that produces the world's best paella rice.
The preparation requires soaking the dried tiger nuts for 12-24 hours, then blending with cold water, straining through muslin multiple times, sweetening, and serving immediately over ice. Commercial horchata is a pale, stabilised shadow of the fresh version.