We tried the milk foam wintermelon tea and wintermelon milk tea with grass jelly (both included in the bogo promo). They are both very similar in taste. We got them with 30% sugar and light ice, which was perfect.
The milk foam wintermelon tea is a wintermelon tea topped with some milk foam. You can drink it with or without stirring. The wintermelon taste is stronger if you do not stir. If you stir the foam with the tea, it will become wintermelon milk tea. So pretty much both drinks are the same, the only difference is the grass jelly. The grass jelly made the wintermelon taste less strong.
Overall we loved both of them!!