Orphan Barrel is one of the more curious stories in bourbon, a collection of forgotten 'orphan' casks that are revived or salvaged by Diageo. Bottled at 90.2 proof, the Barterhouse 20 is the first release in the Orphan Barrel Whiskey Project that draws from the mothballed Stitzel-Weller distillery, where old, vintage casks are being resurrected and reimagined.