We usually don't cook for Barsik. But sometimes, when mom's doing something tasty (from our or his point of view?

) or when we are eating all together, he comes to the kitchen and starts checking whether what eat is eatable for him too or not. He mews persistently until we give him to sniff a piece of our dish. If he considers it eatable (fried chicken, sausage, boiled meat), he can eat some pieces and then gets satisfied.
Usually he eats raw beef and some special cat food.
By the way, it's a good way to test a sausage quality: give it to a fastidious cat, and if he eats it, the sausage is okay. If he doesn't, there are too many unnatural ingredients.