Leftover crab is pretty hard to keep fresh for long. We almost always remove the crab meat from the shells and refrigerate it. One of my favorite ways to use leftover crab meat is a simple crab omelette that I not only eat for breakfast but also lunch or dinner! At its most basic, scramble up several eggs and cook with the crab meat and some salt and pepper. If you want to start getting a little fancy, you can add finely chopped tomatoes, some diced sautÃ©ed red peppers, sprigs of dill and other other appropriate herbs you happen to have in the fridge. I eat this omelette with rice and, of course, ketchup. Not sure why a lot of Filipinos have their eggs with ketchup but I like it as well.
Other ways to used excess crab meat (particularly from steamed crabs) that are generally free of strong flavors such as chilli sauce, etc. is to make a crab spread. Add some mayonnaise flavored with some lemon juice, salt and pepper and chopped dill. This is great on small toasted slices of French or other bread as an appetizer. I suppose a variation of this crab spread could also be used as a sandwich filling. Add some thinly sliced cornichons for added flavor. If you have lots of leftover crab meat, which is almost NEVER the case in our household, you could make some crab cakes as well.