Before barley can be used to make beer, it must be malted. This is done by soaking the barley in water, draining and drying at different temperatures. The intensity of the malt flavor and color depends on how high the temperature is raised during the drying process.
There are more than 50 varieties on the market. Malts range in color from very pale through crystal and amber or even black malts. To brew 100 liters of pale ale, about 20 kg of malt are needed.