QQ is a Taiwanese term for the desired chewiness in boba drinks. 冬 is winter and 瓜 is melon, so 冬瓜 is winter melon. 茶 is tea, so QQ冬瓜茶 is QQ winter melon tea.
About This Dish
Winter melon tea with chewy bits (the drink in this photo has taro balls and melon jelly).