Japanese curry chicken, also known as karei raisu, is a mild and comforting curry dish. The chicken is cooked in a thick and savory curry sauce made from a roux, which is a mixture of flour, butter, and curry powder. The sauce also includes onions, carrots, and potatoes, which are simmered until tender. Japanese curry is typically served with steamed rice and can be customized with toppings like pickles, fried onions, or a soft-boiled egg.