``Are you working on your Cherry Pie again,'' she asks me. I was indeed busy configuring the Raspberry Pi to control my new fully automated brewery. My days of using malt extract and stirring a pot on the stove was over. I wanted to be a true artist and start all-grain brewing.
A Heat Exchange Recirculating Mash System (HERMS) was chosen as the perfect process to implement. For most home brewers, controlling the temperature is all that is needed, but I wanted to control as many variables as possible.