Quest Giver: Dexter
In order to complete this mission you must travel from the Old Camp to Sect Camp. When you are there, ask Lester to bring you to Cor Kalom's alchemy lab. Inside, you will see two chests: one of them is locked and only can be opened with a key and the other one can be lockpicked. Lockpick the one that doesn't need the key, take the recipe and bring it back to Dexter.
Upon completion you will make progress in the quest Admission to the Old Camp.