If you want to improve the taste of canned crab, there are a few things you can do. First, make sure to rinse the crab meat before cooking or eating it. This will help remove any preservatives or other additives that may be affecting the taste. Secondly, try cooking the crab meat in a bit of butter or olive oil. This will help to bring out the natural flavors of the crab. Finally, be sure to season the crab meat with a bit of salt and pepper before cooking or eating it. This will help to enhance the flavor of the crab.