The grated yam has a sticky, glutinous texture that is highly prized in Japanese cuisine. Some restaurants have delivery service by scooters (Honda Super Cub) or bicycles.
In Japan, buckwheat is produced mainly in Hokkaido. In Japan, soba noodles can be found in a variety of settings, from "fast food" places to expensive specialty restaurants.
The dish comes with a side of dipping soup that the noodles and tempura should be dipped in little by little as you eat. Various soba dishes are zaru soba, kake soba, tempura soba, kitsune soba, and tororo soba. While the term âsobaâ is sometimes chuka-soba (ramen) or yakisoba (fried wheat flour noodles), it most commonly refers to long, thin noodles made from soba (buckwheat) flour. Retrieved from Kyoudo-ryouri.com: "Basic Report: 20115, Noodles, Japanese, soba, cooked", https://japan-brand.jnto.go.jp/foods/noodles/2801/, http://kyoudo-ryouri.com/en/food/1507.html, Tokyo soba chef making noodles by hand from scratch, Soba restaurant owner in Nagano making soba noodles, https://en.wikipedia.org/w/index.php?title=Soba&oldid=986352943, Articles with dead external links from January 2011, Articles containing Japanese-language text, Articles containing explicitly cited English-language text, Creative Commons Attribution-ShareAlike License.
In Japan, buckwheat is produced mainly in Hokkaido. (2014). The texture of soba made from the second flour is said to be smooth because it contains less fiber.  Soba that is made with newly harvested buckwheat is called "shin-soba".
Like many Japanese noodles, soba noodles are often served drained and chilled in the summer, and hot in the winter with a soy-based dashi broth. The layer which is just inside of the chaff is called endocarp during the buckwheat season is a pale-green and is the most aromatic part.
The last day of the year it is almost mandatory to enjoy soba, a symbol of long life and thin healthy lifestyle.
Soba salad: Cold soba mixed in the sesame dressing with vegetables. The name âtsukimiâ refers to any egg dish with the yolk served intact, as the egg yolk is said to look like the moon (called âtsukiâ in Japanese).  In the Tokyo area, there is also a tradition of giving out soba to new neighbors after a house move (Hikkoshi soba), although this practice is now rare. Okinawa soba is, in fact, not made from buckwheat like normal soba. Depending on the shop, the percentage of buckwheat flour in soba noodles typically ranges between 40% and 100%. It also has an extreme difference in temperatures.
It is sweeter and more flavorful than regular soba.
Other colored-soba such as black uses sesame, yellow colored soba is made from egg, and pinkish colored soba is sometimes made using ume, Japanese plum. This is especially common with hot noodles, as drawing up the noodles quickly into the mouth helps cool them. Soba is the traditional noodle of choice for Tokyoites.  Note that these noodles do not contain buckwheat. Zaru soba is a simple dish of chilled soba noodles eaten with a refreshing cold tsuyu dipping sauce.