This image was created for a company in Florida, Sturdy Equipment LLC, who sells home beer brewing kits and supplies. The company wanted a shirt to sell online in conjunction with the many other kits and supplies for the home brewer.
Homebrewing is the brewing of beer on a small scale for personal, non-commercial purposes.
Beer has been brewed on the domestic level since its advent, thousands of years prior to its commercial production, although its legality has varied according to local regulation.