This is my first (WIP) attempt at a mod: it adds fermented beverages and it is available on gitorious under WTFPL.
https://gitorious.org/valhalla-s-minetest-mods/fermented
(to download go to the "source tree" and "Download master as tar.gz")
Currently available are cider (no requirements beyond what is availabe in the default game), beer (requires farming for wheat) and scumble (requires snow for freeze distillation).
Since this is the first mod I ever wrote for minetest any comment is appreciated.
Freeze distillation requires more work to check presence of ice on all sides, it will arrive in one of the next commits.
I also need textures for everything: currently I have placeholders that are recognizable, but really ugly.
Recipes and instructions are in the README.txt