Ceviche Nikkei

Nikkei cuisine grew out of Japanese immigration to Peru, which began when the Sakura Maru landed 790 contract laborers at the port of Callao on 3 April 1899, most of them from the Hiroshima, Yamaguchi and Niigata prefectures. Cooks among the immigrants and their descendants brought a sashimi sensibility — clean knife work, very fresh fish and a lighter hand with the marinade — to Peru's ceviche, and grafted soy, ginger and sesame onto the native chili-and-citrus base. The result is less a single invented recipe than a whole approach: where a Lima ceviche leans on lime and aji, the Nikkei version pulls the same fish toward Japanese umami while keeping it Peruvian at heart.

Cool, glossy cubes of barely-set fish with a clean snap, sitting in a marinade that reads bright and sour first, then turns savory from the soy with a low warm hum of ginger. The sesame oil shows up as aroma more than taste, and the aji limo adds a sharp tropical heat at the back. Toasted sesame and slivered red onion give crunch against the silky fish.

As in any ceviche, the citric acid denatures the proteins on the fish surface, firming it without heat — but here the contact time is cut to a minute or two so the fish stays translucent and only just set, closer to sashimi than to a cooked cube. Soy sauce brings glutamates that read as savory depth, ginger contributes a bright pungency, and a few drops of sesame oil carry aroma; all three are stirred into the leche de tigre rather than the fish, so they season without overwhelming. Because the cure is so brief, the fish must be sushi-grade and ice-cold.