Cold soba served on a colander. ざるそば、笊そば
A "zaru" is a colander, originally made from bamboo, but nowadays more often plastic. The soba (buckwheat) noodles are boiled a la dente and then served cold on a draining mat on such a colander.
[Zarusoba. Photo Ad Blankestijn]
The dipping sauce (tsukejiru) is based on kaeshi (a mixture of soy sauce, tamari and sugar, that is matured for a week in the refrigerator) with the addition of ichiban dashi (first stock) and katsuobushi (dried bonito fish flakes). Negi (finely chopped welsh onions) are also added, always at the table. One can also add daikon-oroshi (as in the picture). In the picture shredded nori and goma (sesame seed) have been sprinkled over the soba.