Although wine consumption has a considerable tradition in Hungary, beer has been consumed in larger quantities in recent years, which increased the imports and the large-scale domestic production. The brewing process involves the fermentation of beer. There are two types of fermentation technologies, namely lower and upper fermentation. The fermentation process can be monitored and automated. Fully automated systems are quite expensive. Monitoring solutions also help improve the process, but are not the most effective solutions. This paper aim is to present a self-made automated fermentation control based on an existing monitoring system.