Day of the Bull (土 用 の 丑 の ё Doyo no wushi no hi) is a day associated with the sign "Bull" in the traditional Japanese calendar of Chinese origin [1]. The most famous in Japan “Day of the Bull” (one or two days with an interval of 12 days) falls on the hottest season (late July - early August [2]), which is also characterized by high humidity [3]. The main dish of this day is kabayaki - baked or fried eel (unagi) with a sweet teriyaki sauce [3]. High in fat, this food is believed to help maintain strength during this sweltering season [3] [2].