Obtain 8 of Yoon's Apples and 50 of Yoon's Craneberries, then bring them to Bobo Ironpaw to brew into Apple-Berry Hooch.
Sometimes I feel sad for Jogu. He's the only jinyu around, and I don't think he has any friends. Other than his smelly bottle, of course.
You know what? I've got an idea. Farmer Yoon has a basket of craneberries inside his house, and a few apples as well. I'm sure you could bring them to the stillmaster in the Halfhill Market and get him to brew something special for Jogu.