Tiradito de Pargo · Leche de Tigre · Ají Amarillo

Tiradito is Peru's Japanese-immigrant gift to the ceviche tradition. In late-19th-century Lima, Japanese immigrants working in Peruvian fish markets noticed that the classical ceviche technique — cube the fish, douse in lime, wait 15 minutes — produced a fully acid-cured 'white' product. They preferred their fish RAW; their knife skills produced sashimi-thin slices; they applied the lime just before eating, for only seconds of contact, creating a completely different preparation. This became tiradito: thin slices, flash-cure, served with Peruvian sauces instead of Japanese. Two cuisines merged into one dish that belongs to both and to neither — the founding move of what became the Nikkei tradition.

The technical difference between ceviche and tiradito is the 90-second window. Classical ceviche applies lime juice to cubed fish for 2+ minutes, allowing the citric acid (pH ~2.1) to denature myosin at the surface, producing the opaque-white 'cooked-by-acid' appearance. Tiradito slices the fish 2-3 mm thin, dresses it at 90 seconds — the half-cure point — where the surface has JUST begun to turn translucent-white but the fish reads as raw when eaten. It is the plating that captures the texture: laid flat on a cold plate, the slices are ready immediately; the leche de tigre pools underneath and partially cures from below while the top stays exposed. This asymmetric cure creates a unique mouthfeel that neither sashimi nor ceviche produces.

The ají amarillo (Peruvian yellow chile) is the signature flavor. A fresh ají amarillo is golden-yellow, fruity-hot, aromatic, with a citrus-forward bite. The paste from bottled Peruvian import is an acceptable substitute at 1 Tbsp in the leche de tigre. Rocoto (red pepper) gives a different flavor profile — redder, earthier, spicier — which is why rocoto-based leche de tigre is for ceviche (stays on the fish longer, develops heat) and ají amarillo version is for tiradito (brighter, more immediate, designed to be eaten within 60 seconds of plating).

This closes UMAMI-2 at 10/10 — hitting the category's 10-each goal AND completing the v2-slate 5/5 milestone. The library now teaches the full raw-no-cook spectrum: short cures (swordfish ceviche, corvina ceviche, tiradito), flash-cures (aguachile, tiradito), no-cures (tuna tartare, beef tartare, hamachi crudo, carpaccio de gambas rojas, watermelon-bottarga), and showcase plates (oysters three-dressings). Ten recipes; four different sub-traditions; one cold plate per technique family.