How much malt can I use in the Brew Monk? Maximum 8 kg in the regular Brew Monk; 12 kg in the Brew Monk Magnus; 18 kg in the Brew Monk Titan. Related articles What is the minimum batch size in litre for a Brew Monk? The bottom of my Brew Monk is burned. Up to what temperature can I use the pump? My filter plate does not fit properly/tends to fall through the malt pipe. My Brew Monk switches off while I'm brewing.