I'll try to keep my answer simple: Use taint fully as long as you stay within the rules of the competition and the rulings of the chairman BUT when using taint fully means you get infinite x, or a loop of y, I will penalize because at many tables this would become a problem. If you manage to get a lot out of taint without breaking the game, I'm fine.
Maybe state what kind of game your dish is for (only tier 1 PCs, only tier 3s). I think that would help me.