GHOST® BCAA Amino Acids. () . . . GHOST BCAA Amino Acids 30 Servings GHOST BCAA can be enjoyed around the clock as a phenomenal performance alternative to sugary sports drinks or juices. Mix each scoop (serving) of GHOST BCAA with 8 10 oz of water or beverage of choice. Vary amount of liquid to taste. Consume during or after exercise on training days or throughout the day as a performance thirst quencher.