Causa is pre-Columbian in origin — its name derives from the Quechua word kawsay (life, sustenance), reflecting the central role of potato in Andean civilisation. The potato was domesticated in the Andes over 7,000 years ago; there are over 3,000 native varieties in Peru.
Causa — a cold, layered preparation of ají amarillo-seasoned potato purée with a filling of tuna, chicken, or seafood salad — demonstrates the use of potato as a structural medium rather than a textural component. The potato is mashed to a completely smooth, slightly sticky paste (adding oil but no dairy), seasoned with ají amarillo paste and lime, and then used as the structural layers that frame a filling. The technique requires a very specific potato texture — dry, smooth, pliable, not stiff — and it must be eaten cold.
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