Causa rellena is a cold layered terrine of mashed yellow potato seasoned with aji amarillo, lime and oil, layered with chicken, tuna, crab or avocado, plated as a cylinder.
Causa descends from pre-Columbian Andean potato cuisine; the modern layered form emerged in 19th century Lima, the name meaning a fundraising cause during the War of the Pacific (1879-1883). The yellow papa amarilla and aji amarillo give the canonical Lima version its colour. Cosme, Isolina and Wa-Lok keep the classic chicken or tuna stuffing alive; the modern Nikkei versions stack avocado, mayo and sashimi-grade fish.
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