Pasteurisation is a process that is used to keep foods fresh. It is mainly known to be used in the dairy industry but it is also used in other food industries such as the alcoholic beverage industry.
In this process, food items are heated in order to destroy microorganisms that spoil and infect it.
Since 1117, the Chinese have been heating wine in order to preserve it. In 1864, the French scientist Louis Pasteur found out that if fresh wine was heated at 50-60 °C for a short time, it would not spoil when stored. The process is named after him as he patented it in 1865