Beer

Beer is a liquid that can be used as fertilizer. Additionally it's used by Precursor Spawner as fuel.

This liquid doesn't exist as lakes/puddles anywhere. It also can't be produced by any chemical reaction. Precursor Beer Generator allows you to quickly produce 1000 Beer, but it stops producing if you already have 1000 Beer in your inventory, so this process can't be automated.

The only renewable source of Beer are Bees of some types.