Brewing process

During this step, the batter is filtered: the liquid is separated from the solid parts. This is done in a lauter tun, where the batter is placed. The husks of the grains form a filter bed during this step. If the brewer has scraped too fine, he will notice it here. The husks are not firm enough and the filter bed does not flow properly.

The liquid is collected under the filter bed. The filter bed is then rinsed with heated water to rinse all remaining sugars from the filter bed. This is of course also taken care of.

After this step, we have a solid and a liquid left. The solid is called spent grain (mart, in Belgium), which is often processed into animal feed. We need the liquid: the wort.