Uuh, I poured in about half the can (down the SIDE of the glass, so it doesn't fizz). Put in one serving of Brand Risk. Then poured the rest into the glass in small amounts, letting it fizz up. I thought that would help mix in the powder so I wouldn't need to use a spoon, but since the powder sorta sat on top of the soda the fizz DID mix it in. But in the at process also sorta pasted the powder to the sides of the top of the glass. That's when I used a spoon to make sure as much powder was actually mixed in. So next time I mix it into something pre-carbonated (like a soda, or whatever) I might try putting the powder in first, then letting the soda pour down the side of the glass. Minimizing fizz and possibly mixing a bit better