soba water(Sobayu)
Sobayu is served in a teapot or tub of hot water after eating soba at a soba restaurant. It is usually served in a teapot or tub of hot water after eating soba at a soba restaurant. The custom of drinking soba-yu is said to have started in Shinshu, a famous soba production area, and spread to Edo (present-day Tokyo) in the mid-Edo period (1603-1867). Since the water in soba (buckwheat) boiling water contains vegetable protein, potassium, vitamins B1 and B2, niacin, pantothenic acid, rutin, and other nutrients, it is believed that people drank it to avoid wasting the nutritional value of the water.
