Hello there.  I can understand your concern.  BCAA are Branched Chain Amino Acids which can be bitter to a lot of people, one way to mask the bitterness is by using it with your favourite beverage. Like if you like grape juice, you can mix with that and consume. It doesn't alter the effectiveness of BCAA in any way. You can use any juice for that matter. It would be better if you use fresh fruit juices rather than packed carton. I hope my answer has help you. Best regards. Dr. Anil kumar jain. Bangalore.