When talking about cod, a popular fish dish of the cuisine in several cultures, there is an ongoing debate as to whether it should be soaked in milk before cooking.  The most popular school of thought favors soaking the cod in milk before cooking as it purportedly makes the fish more tender and removes any "fishy" odor.  According to those who cook with this method, the proteins and fats are broken down slowly during this soaking process without the use of high heat.  On the flip side, there is also evidence that suggests that pre-soaking may not necessarily have any actual benefit in improving the overall taste and texture of cooked cod.