Taken with water, it tastes is reminiscent of weak milk. Not very good by any means, but if I slip a meal and need to balance out my macros, I will often down a scoop with some water. It add almost zero thickness to any liquid.
Mixed with milk, you can mix up to 2 scoops (50g) with only 8oz with just a slight change in the milk. Slight bitter increase. But it still tastes like milk...and I LOVE ice cold milk. So I drop a few icecubes in it and shake up and enjoy it plain.
You can mix with lemonade and berry flavors like (mio) but there is that slight dairy aftertaste. Not terrible. I like to mix it with iced coffee....makes very nice treat. Lots of ways to use it!!!
This is how I like to buy it when I can find it. 44lbs at a time. Same stuff that the NOW unflavored is. WPI-90