Horse consumption in Japan traces to the Yayoi period; widespread in the Sengoku (Warring States) period as battlefield nutrition; Buddhist meat prohibitions from 675 CE suppressed meat eating but created euphemistic naming conventions ('cherry blossom' for horse, 'mountain whale' for boar) to disguise consumption; the regional persistence of these traditions reflects the limits of centrally-mandated food rules
Japan's meat culture extends well beyond the globally familiar beef, pork, and chicken — regional traditions preserve a wide range of unusual proteins that reflect either historical dietary necessity or specific local traditions. Sakuraniku (桜肉 — 'cherry blossom meat', a euphemism for horse meat) is consumed in Kumamoto, Nagano, and Fukushima as both raw sashimi (basashi) and cooked preparations. Horse meat has less fat and more iron than beef, with a subtle sweetness from high glycogen content — the sashimi is served with fresh ginger and onion rather than wasabi, as the delicate flavour doesn't require strong acid notes. Shika (deer venison) is the basis of Nara cuisine and autumn hunting culture in mountain regions; prepared similarly to beef in sukiyaki-style preparations. Inoshishi (wild boar — 'ino') is the meat of botan-nabe (peony hotpot) — a winter nabemono in mountain regions of Kyushu and Shikoku; the presentation of boar slices arranged like a peony flower is the theatrical element. Tanuki (raccoon dog) was historically eaten in certain regions; rare today. Kujira (whale): Japan's most controversial protein, legally consumed in specific permitted commercial hunts; the culture of whale eating is concentrated in Wakayama (Taiji), Hokkaido, and certain island communities.
Horse meat's distinctive sweetness comes from high glycogen (muscle sugar) content — horse muscle stores roughly 3× more glycogen than beef; this glycogen reads on the palate as a clean sweetness that beef sashimi lacks; combined with high myoglobin (iron richness), basashi delivers sweet-mineral notes unlike any other sashimi protein
Regional proteins reflect historical availability and Buddhist meat-prohibition exceptions (game hunting was often outside Buddhist restrictions); most unusual proteins are consumed in winter and framed as warming foods with medicinal character (boar, venison); raw horse sashimi requires the freshest, safest-sourced horse (dedicated basashi-grade suppliers); the euphemistic naming (cherry blossom, peony) reflects historical circumspection around meat eating.
Basashi service: thin slices against the grain (similar to beef sashimi), served with freshly grated ginger, thinly sliced onion, and light soy — not wasabi or heavy acid; the glycogen sweetness distinguishes horse from beef sashimi; frozen briefly before slicing (like beef sashimi) aids clean cutting; botan-nabe: wild boar sliced 3mm thick, arranged decoratively in the pot, cooked in miso-based stock with root vegetables — the fat of wild boar is more floral than pork fat, with a slight gamey complexity.
Assuming all Japanese meat culture is beef-centric — regional unusual proteins are serious culinary traditions; treating basashi (horse sashimi) as shock food rather than a refined preparation with its own flavour logic; applying strong flavourings to basashi that mask the specific sweet-iron flavour.
Hachisu, Nancy Singleton — Japanese Farm Food; Richie, Donald — A Taste of Japan