Butsu is a prefix derived from the verb buchi which literally means to hit but the usage of the prefix is a verb-intensifier. Kakeru in this context means to shower or pour. The word bukkake is often used in Japanese to describe pouring out water with sufficient momentum to cause splashing or spilling.
It is also useful for the healing of wounds and the formation of scar tissue. Therefore, people with wounds should eat ample amounts of amla, guava, lemon, orange, cranberry, strawberry, pineapple, kiwi fruit, broccoli, cauliflower, tomatoes, spinach, cabbage, and other food items that contain vitamin C.
The other amino acid that has been shown to speed wound healing is glutamine. In a study out of Harvard, glutamine was shown to shorten wound healing by about four days. Foods rich in glutamine include beef, chicken, and all types of fish. Animal based dairy products such as milk, cheese, yogurt and eggs contain glutamine with ricotta and cottage cheese being two of the best sources.