The Japanese approach to miso soup is fundamentally seasonal — the miso type, the garnishes, and the dashi base shift with the season. Spring: white miso, clams, young tofu, trefoil. Summer: light awase miso, cold-served, cucumber, myoga ginger. Autumn: red miso, mushrooms, root vegetables, mountain herbs. Winter: dark miso, hearty root vegetables, daikon, negi (Japanese leek). This seasonal rotation is not decorative — each season's ingredients have flavour compounds that align chemically with the miso type that matches them.
- **Spring:** Asari clams (Manila clams) are the canonical spring miso garnish — the clams' briny, sweet compounds align precisely with white miso's delicate sweetness. The clams open in the miso soup and their liquor enriches the broth. - **Summer:** Cold miso soup (hiyajiru) — a rare preparation unique to certain southern Japanese regions. The miso is thinned with cold dashi and served over rice. - **Autumn:** Matsutake mushroom season — the single most prized mushroom in Japan. In miso soup, a thin slice of matsutake and a piece of yuzu peel is the autumn benchmark preparation. - **Winter:** Kenchin-jiru — root vegetables, tofu, and konnyaku in a dark miso or shoyu broth thickened with sesame.
Tsuji