i worked few years ago in a fruit and veg company, and could take away left overs, thankfully iv remained friendly so still go back now and again, pigs often ate lots of tomatoes, most things they would not eat onions orange lemon, citrus etc, and un cooked potato, so after a few times i just stuck to stuff they would eat, they wont eat anything they dont like, interesting about tomato ill check that out,, ps strawberry apple and grapes were the favs