Just as the title says really. I need something to put in the stroganoff sauce that isn't mushrooms and isn't quorn or any of those pretend meat veggie things. Not vegetables, either, as we're having them on the side.
I don't mind making something - I was thinking some sort of either lentil or soya mince balls - but they aren't really a similar texture to either beef or mushrooms, and I'm a bit stuck for ideas!