Protein Coffee
I make my protein coffee like Lucy posted above. You could use an unflavored protein and possibly that may not change the coffee taste too much. My favorite unflavored protein is AnyWhey. I cook with it often. There are also some coffee flavored proteins like Click (I did not like it) and Fit Frappe (very good but expensive). Good luck....protein coffee has been a lifesaver for me!!
~~Jennifer
Wow. I am so boring.... this could account for why I'm an accountant.
I take 1 scoop of fudge chocolate ISO Sensation, anywhere from 1/4 cup to 1/2 cup of cream, and add espresso to the shaker bottle. Shake well, but then open top of bottle to release pressure.
Many times I use cold coffee in a second shake later in the morning. I've put just about every flavor of protein powder in a shaker bottle with coffee.