At Taco Bell restaurants the food is “assembled,” not prepared. The guacamole isn’t made by workers in the kitchen; it’s made at a factory in Michoacán, Mexico, then frozen and shipped north. The chain’s taco meat arrives frozen and precooked in vacuum-sealed plastic bags. The beans are dehydrated and look like brownish corn flakes. The cooking process is fairly simple. “Everything’s add water,” a Taco Bell employee told me. “Just add hot water.”