This is a shake and vape. The longer it sits the stronger the watermelon is and can taste a little chemically, but this is a great 5-minute mix when you're running out the door and don't have anything else on-hand.
I like this recipe, however that is a lot of flavoring. I am going to adapt it a bit and try 4% each in a 10ml bottle and see how that goes. Also, to fight the chemically taste you can simply cut back on flavorings :) if that does not help then try pouring the juice into a beaker and fluff it with a milk frother until white and our it back in the bottle and try it again.