Hiyayakko
Variety of toppings. The choice of toppings on the tofu vary among households and restaurants, but a standard combination is chopped green onion with katsuobushi (dried skipjack tuna flakes) and soy sauce. Other toppings include: History and background. "Hiyayakko" is also known as "hiyakko" or "yakko-dōfu". "Hiya" means cold, and "yakko" refers to the servants of samurai during the Edo period in Japan. They wore a vest on which the "nail-puller crest" was attached, on the shoulders; therefore, cutting something (e.g. tofu) into cubes was called . ""Hiyakkoi"" or ""hyakkoi"", the Tokyo dialectal term equivalent to the standard  Japanese , is also a possible etymology. In the "Tofu Hyakuchin", it is said that "hiyayakko" is so well known that it needs no introduction. In haiku, "hiyayakko" is a season word for summer. This is because tofu is often enjoyed cold in the summer, warm and boiled in a broth in the winter.