Edo (Tokyo) and the Japanese mountains
Soba
Buckwheat noodles served cold on a bamboo mat with a dashi-soy dipping sauce — Japan's mountain-cuisine noodle, a study in restraint.
Twenty-percent buckwheat is fine. One-hundred is hard.
Buckwheat flour has no gluten. A 100% buckwheat soba (*juwari soba*) requires expert hands — the dough has nothing structural to hold it together and the noodles can break before they get to the bowl. Most shops use a 20–80 mix with wheat flour for elasticity. The juwari version is the test of a soba master; *nihachi* (80–20 buckwheat-wheat) is the standard most shops offer.
4 · Plate
Edo (Tokyo) and the Japanese mountains
Soba
Buckwheat noodles served cold on a bamboo mat with a dashi-soy dipping sauce — Japan's mountain-cuisine noodle, a study in restraint.
The mountain cuisine that became Tokyo’s lunch. Buckwheat (soba) grows in cold, poor soil where rice does not — the Japanese Alps, Nagano, Yamagata, Hokkaido — and the noodle tradition emerged in these mountain regions before reaching Edo (Tokyo) in the 17th century. The Edo version is what most of the world calls soba: thin, dark, served chilled with a sweet dashi-soy dipping sauce.
Soba has religious weight in Japan. Toshikoshi soba — “year-crossing soba” — is eaten on New Year’s Eve as a wish for a long life (the long noodle as a metaphor). Hikkoshi soba is given to new neighbours when moving house. The dish carries cultural meaning that ramen and udon do not.
Drink the soba-yu.
After the noodles, the kitchen brings a small kettle of *soba-yu* — the cooking water, cloudy with buckwheat starch. The diner pours it into the remaining dipping sauce and drinks it as a soup. The buckwheat-flavoured starch carries the dashi-soy and turns leftover sauce into a final course. This is the Edo-period innovation that turned soba into a complete meal.