(UHT) preservation of milk by raising its temperature to 132°C/269°F or more. It uses higher temperatures than pasteurization, and kills all bacteria present, giving the milk a long shelf life but altering the flavour.
The emblem reflects the Vatican's importance as the headquarters of the Roman Catholic Church. The colours of the flag are based on the gold and silver of the papal keys. Effective date: 8 June 1929.