Does Curry Always Have Coconut Milk. In homes and in some commercial operations, japanese curry is made using commercially available roux, typically with water. Cooking the onions slowly and for a longer period causes the onions to brown and develop a sweeter flavor.;
Coconut milk makes this curry sweeter than using regular cream.; Most japanese curry is not made with coconut milk. It also lends a helping hand to foods with a lot of spice in them, such as curry.