What is Complete Protein Hot Chocolate™? Complete Protein Hot Chocolate™ is that delicious, hot & comforting beverage everyone loves, but now with 22g protein per serving! Complete Protein Hot Chocolate™ is another hot drink BULK POWDERS™ have formulated to make better than the original. Like Complete Protein Coffee™ we have used our unique Hydrolysed Whey Protein Isolate, which is our heat stable whey. This means that you can simply pour in boiling hot water, stir & enjoy.