Heat treated describes food that has been heated specifically to reduce microbial populations to acceptable, safe levels — without necessarily achieving full sterilisation. Pasteurised milk, for example, is heat treated: heated enough to destroy vegetative pathogens such as Salmonella, Listeria, and Campylobacter, but not the extreme retort temperatures of UHT sterilisation. The term appears in regulations distinguishing fresh from treated products — “heat-treated” cream, “heat-treated” pallet wood — and in trade, where it signals a defined safety step. The treatment must be validated: the right temperature for the right time, monitored and recorded. Heat treatment is the oldest and most trusted tool in food safety — cooking, scaled up and controlled.