Ol' Dirty Bastard is the inspiration behind a brand of brew courtesy of Young Dirty Bastard ... who says he's getting into the beer biz because his late pops loved a cold one.

The new adult beverage is a honey ale called Young Dirty Brew ... and ODB's kid says he's wanted to honor his father with a drink ever since he first saw his pops sipping on Olde English.

source: tmz.com