Bitter drink recipe

Bitter drink recipe is a paper note

Location
It can be obtained by talking to Ulysses at the end of Lonesome Road if he lives. Alternatively, it can be found in the footlocker left by him if he dies.

Behind the scenes
When asked about implementing the recipe, Chris Avellone stated that the "Bitter Drink recipe came from the Twin Mothers in the East, so you'd have to find someone who met them."