You still have to pay for it because it costs money to make. But it’s completely open-source beer so you can recreate it yourself if you don’t want to buy it pre-made, or you want to modify the recipe.
I have no idea how to make beer otherwise I’d have a crack at this shitpost myself…
This is literally the whole idea of Nerdbrewing
“…Since sharing is caring, Nerdbrewing brought open source from the software world into the world of brewing and the recipes are free for any homebrewer to try out!”