What is UHT milk?

UHT (ultra-high temperature) milk is milk that has undergone heat treatment at a temperature of 130-140°C for 3-5 seconds. This process is carried out to kill harmful micro-organisms that may be present in the milk and to extend the shelf-life of the product. UHT milk does not require refrigeration until it is opened.

There are few nutritional differences between UHT milk and conventional milk, although some vitamins and minerals are slightly reduced in UHT milk. UHT milk is not commonly consumed in Ireland, but has grown in popularity in other parts of the world; accounting for half of all milk sales in Western Europe.