What's your favorite protein shake/smoothie recipe?

In for this.

I use Optimum Whey Isolate and it's fine, but protein powder/shakes always makes me nauseous for a couple of hours afterwards. I've found that drinking them cold as opposed to room temp helps.

Not a shake, but I like mixing 3-4 scoops with a tub of Fage Greek yogurt. Straight up chocolate pudding (or whatever flavor) that's all protein.

Frozen banana, frozen blueberries, GNC Cookies and Cream Whey Protien, almond milk
If you get bored with that alone add some PB2...

Almond milk
Peanut butter
Banana
Oats
Vanilla/chocolate protein

Diet coach cut out banana’s though

Bodybuilding.com brand protein (birthday cake flavor), almond milk and a scoop of natural peanut butter

Just a tip to reinforce what boxcarbarney said. I make a pitcher of cold brew at the house and sometimes add some to my protein shakes or smoothies. It gives it a pretty good flavor unless you put too much.

Optimum whey vanilla, unsweetened coconut milk, local honey, reduced fat peanut butter, Greek yogurt, frozen bananas, frozen strawberries, and frozen spinach. Blend in a ninja. Drink one every morning.