The invention relates to a brewing apparatus, in particular for coffee, comprising a drainage valve, which is located on the one hand in a brewing liquid path between a brewing liquid container and a brewing unit of the brewing apparatus and on the other hand, in a drainage liquid path between the brewing unit and an outlet of the brewing apparatus. In a brewing position of the drainage valve, the brewing liquid path is released and the drainage liquid path is blocked. The brewing apparatus is characterised by a drainage position of the drainage valve in which both the drainage liquid path and also the brewing liquid path are released and a decalcification position of the drainage valve in which the brewing liquid path is blocked and a decalcification liquid path is produced between the brewing liquid container and the outlet via the drainage valve.