The hours you spend asleep are the longest stretch your body goes without protein, and they are also when most of the repair happens. Casein exists to cover that gap, a slow-release dairy protein that keeps amino acids arriving for hours after you have gone to bed.
BioTechUSA give 22g per serving and add L-glutamine on top, the amino acid your recovery draws on hardest during rest. It is 73% protein with 4.3g of BCAAs per serving, low in sugar and gluten free. It is also the most versatile protein in the cupboard: casein thickens, so it makes a genuine pudding rather than a drink, and it holds up in baking where whey tends not to.
Each 908G tub holds 30 full 30g servings, and the label's own advice is to take one before going to sleep.
Available in Chocolate, Strawberry and Vanilla, all three at the same 22g per serving. Chocolate is the one to reach for if you are making it as a pudding; the other two suit a straight shake before bed.
