I heartily recommend Arcane Admixture to achieve the perfect blend of mild and spicy sauces. It could also work for the shredded cheese blend, but that might require an actual Ritual.
I'd like to recommend a great, authentic taco eatery.
I'd like to, but I live in Minnesota where the only authentic ethnic easily found is lye-soaked cod (lutefisk) and potato flour flat bread (Norwegian tortillas/lefse).
Is it sad that I read the title of the thread and thought it was going to be about Totally Arbitrary Collectible Objects? I was thinking another Anachronox fan had shown up and was trying to come up with some crazy system for putting TACOs in his 4E game.