I bought 100% whey protein from GNC..i got it in chocolate..then i made a shake with a scoop of that, skim milk and a scoop of carb smart no sugar added chocolate breyers ice cream...and i through it in a blender, it ends up being 30g of protein in a drink....you can do that in chocolate vanilla or strawberry..whichever you like and it doesnt taste to bad...and it give you half your protein.
I was only on a 5 day liquid diet..and i cheated 3 days before surgery i had a grilled chicken sandwhich...mistake it was....but my surgery went 100% well..but dont make it a habit...they do it for a reason...make sure you stick to your diet and hang in there...after the surgery you wont be hungry at all....so keep up the good work