Trinitea Tea at 774 Jamacha Road, El Cajon, California.

Great service. They have member rewards (buy 10 drinks get 1 free) and Forkspot discounts. I get the Java Chip Trippucino with boba and splenda (instead of sugar). Sometimes they heat the boba creating an interesting contrast of temperature. It is my favorite boba spot in SD and I've tried many others on Convoy St. Their Wi-Fi is decent but the place can feel a bit hot during the summer. The background music is generally relaxing acoustic music which is always nice.