I tested 5 ways to add protein to my coffee. The best ingredient was completely undetectable.
I tried protein powder, PB2, egg whites, cottage cheese, and collagen powder to find the best way to add protein to my coffee ...
What I learned about the caffeine in Starbucks’ Cortado after drinking it for a week
The most recent time I ordered the drink, I discovered just how much caffeine this small, eight-ounce coffee pack contained.