My wife scored a plastic trash can liner full of cat food from one of her friends. It probably weighs 20 pounds and the cans are 5.5 oz each, so there are probably at least 50 or 60 cans in there. It had been passed around to several people and none of their cats would eat it. Linda leaves food out for raccoons in the park, so she ended up with it. Raccoons will eat anything.
Before consigning it to the raccoons, I decided to see if our two cats would eat it. They are big boys, always hungry and will eat almost anything. This stuff is one of the anti allergy formulas that they sell in veterinarian hospitals. The ingredients look to be very high quality and it smells good. It's made almost completely from duck meat and green peas. On first try, while interested, the cats didn't eat much. It was finely ground and very dense. I decided to dilute it a little. First I mixed it with some other canned cat food and had decent results with that. Next I just mixed it up with a little warm water so the consistency would be a lot looser. They were all over it and licked their little bowls clean, day after day.
If you can find any of this stuff in a clearance bin for cheap and I expect you can, buy it. It's very good quality and cats love it.