Cabka is a liquor Howard made for Orc, although he also sold it to various others, like Jamal and Turk. It's made by distilling cabbage and rotten oranges, although according to Orc, anything can be used. Howard distills it inside the Coates Academy.
The name is a mix of the words 'cabbage' and 'vodka'. It is described as being clear and strong smelling. Orc comments on it saying, "It was nasty stuff".
It is unknown whether it is still being made since Howard's death in Fear.