My cat is finicky. He has only a mid-priced preferred wet food, 'Whiskers,' which smells disgusting to me and does not seem very healthy.
He does not eat canned sardines either but loves tuna fish.
So to give him a better food quality for a lower price, I often oven-bake frozen Alaskan pollock and then smash it to pieces by fork to make cat food. But the cat hardly eats that supposedly healthy food after the first day or two of cooking.
Sometimes I add tomato paste, dried basil, or a bit of salt, hoping to make the fish more appealing, but they don't seem to help much.
It is worth mentioning that the cat has had upper respiratory disease, and has frequent dark discharges from his nose. So maybe his sense of smell is not great.
Nevertheless, I'm wondering if there are some ingredients which are particularly liked by cats that I can add to his fish food?