Cats are obligate carnivores - they only need to eat meat and bones, they can't digest plant matter properly, they also can't produce taurine (found in red bull and other drinks like that), taurine is found in raw muscle meat. If you are feeding raw then don't forget cats like to have a good chew on bones as well (for the calcium) - my cats prefer chicken wings as opposed to an actual bone. They would in the wild get some plant matter from the preys stomach so if you are introducing veg they only need a very very small amount of it. Puree it and mix it into the meat (my cats tend to turn their noses up at any veg, puree'd or whole apart from the odd baked bean dropped by my toddler)