The street vendors in Taiwan usually sell milk drink of various sorts such as Watermelon or Cantaloupe. Xigua Niu Nai or Taiwanese Watermelon Milk Juice is my favorite thing to make when I have to get rid of the watermelon in fridge. This juicy sweetness is hella easy to make and will immediately flood the thirsty souls.
1-1.5 lbs watermelon, cut into chunks
1 tsp raw honey (if the watermelon is not sweet enough)