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…
I think that’s already a thing. I remember reading about that a few years ago, but probably hard to find after the home brewing and craft beer hype.