In Japan, it is hot and humid in summer. The shirts stick to the body with sweat if you stay outside too long. People in Japan love to have cold noodles in hot summer day. They have cold Udon, cold Hiyamugi(thin white noodle), cold Soumen noodles(Very thin white noodle) and Soba or buckwheat noodles. I happened to teach how to make Japanese Cold buckwheat or Soba noodle soup. My American students seemed that they had never tried cold noodle soup before. They were not sure what it was. I went to buy ingredients with them while I described what we were buying.
After we got their parents house, I demonstrated how to make soup and how to boil noodles. The soup and the noodles cooled down, I served them a small bowl of cold noodle soup. They loved it.
I also showed how to make Tempura. Japanese people love Tempura with their noodles. Cooking Tempura is hot and sweaty while they are very delicious and gives you energy.