The aim of this work was to learn about the raw materials for the beer production, its technology and how the "Grainfather" system works, and to make a craft beer from it, which we called Lag.anica. Beer is one of the oldest alcoholic beverages originating from Mesopotamia, and according to archaeological records, the first form of beer was not even similar to the beer we know today. In parallel with the advances in science and technology, beer production has also evolved significantly, especially craft beer, which is now increasingly popular and the production of which is becoming more and more important. Craft beer is any beer produced in a craft brewery or in a household, that is, that product obtained by an individual person or an independent company that puts its product on the market for the sole purpose of its business and sells no more than 6 million barrels per year. Beer is produced in several steps, the most important of which are malting, wort boiling, pressing, hopping, cooling, clarification, alcoholic fermentation, bottling, and carbonation. Lag.anica craft beer was designed and produced in this work.