Hands down the best bubble tea place in Madison, in Wisconsin, or even in the entire Midwest.
As a native from bubble tea's home country Taiwan, I generally have a pretty high standard on any flavored tea drinks. Jade Mountain, the name of the highest peak in Taiwan, is a dream come true for many Asian international students at UW-Madison. This place could compete with any tea shops/stands you find everywhere in Taiwan.
In term of the bubble tea, the sweetness and chewiness of the bubbles (or pearl or boba, whatever you want to call it) is perfect, and if you taste it carefully, you could tell that Jade Mountain adds legit TEA in the drink, not some crappy tea omnipresent in other tea places.
As many reviews have mentioned, their coffee, ramen, and sandwiches are just standard. Stick to the tea menu in your first visits, because it is what Jade Mountain is known for.