Love almost all the drinks from this shop (best for tea lovers!) Most drinks are tea flavoured. This drink i had was Earl Grey Milk Tea with pearls and all the prices are reasonable ($2-3+ medium cup). They sell some food (waffles etc) and they provode Ipads for customers to use!
Location: come out of Potong Pasir MRT exit and you will see Old Chang Kee. It's at the left side of Old Chang Kee and the shop is not so obvious.