Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Good but wish you could control the speed.

Bought this for mixing up chocolate milk for me, a 32 year old male adult. The reason however is I avoid all sugars and found some sugar free chocolate syrup but for the life of me couldn't get it to actually mix up with a spoon. Guess it's due to however they make the sugar free stuff.This thing sure did the trick but the first time using it I nearly made a unintended whipped cream topping in the process.It spins super fast and I really wish there was a way to have control over the mixing speed.But I've since learned to do short pulses in order to get it mixed to the level I desire without overdoing it.