A factory is the building or complex of buildings where goods are manufactured on a large scale — and the food factory is where raw agricultural materials become the products on the shelf. Unlike the craft kitchen, the food factory runs on continuous lines: ingredients in at one end, packed products out at the other, with processing, quality control, and packaging engineered as a single flow. Hygiene is architectural — separated zones for raw and cooked, washable surfaces, controlled air — because the scale that makes production efficient also makes contamination catastrophic. Automation handles the repetitive, the heavy, and the precise; people handle the oversight, the judgement, and the maintenance. The modern food factory is a paradox: the most industrial of buildings, producing the most intimate of goods — the food we put in our bodies.