There's a newish joint in town: Boba Guys, on 19th near Valencia. It has become one of my favorite treats, because its list of ingredients is so different from the usual awful ingredients in boba tea. They don't use awful powders--they have high-quality milks--and they use high-quality teas. Moreover, you can order your tea unsweetened, which is a refreshing and excellent change!
The tapioca balls I could take or leave, so I decided to make myself a homemade version of the tea. It's very simple: put high-quality green tea (jasmine green is particularly tasty) in a bag or steeper, steep in a small amount of water until you get very concentrated tea, then mix with cold soymilk. Delicious.