Tufbrew is a cut perk from Ascension, similar to Pronaide. The only evidence of its existance are in the game files, in the quotes, where Tank Dempsey refers to it as "Tufbrew." Edward Richtofen also states that the drink would toughen him up, similar to PhD Flopper. Nikolai Belinski implies that the drink goes down like glue, which is similar to the way he describes PhD Flopper.