That’s what I do. I use low-sugar/high protein soy milk (Trader Joe’s) instead of water in my post-workout smoothies. And I add greek yogurt to give me even more protein. In Taiwan I make Costco my first stop from the airport and get my greek yogurt and frozen berries there.
I get about 15g per serving of greek yogurt, but I still have to use protein powder to get enough protein. At least the vanilla flavor of ON Gold Standard 100% Whey powder (U.S. Costco, USD$50/bag) is pretty neutral, and you can still taste fruit in your smoothie. I also add raw shelled hemp seed - very nutty, and high in protein. Haven’t seen it in Taiwan yet, though.
You guys should really do some research on the androgenic side effects of soy protein. Menopausal women use it to increase their estrogen levels. For men, if you use too much, you can develop gynecomastia as well as stunt muscle growth.
I’ve talked about this before, the estrogenic affects of eating soy are completely overblown.
Its a great complete protein to add to your total protein consumption. The only knock I would give it is that it’s biological value is around 75% where as protein from an egg is 100%.
You probably don’t want to get all your protein from soy if you’re trying to consume enough for muscle building. But it’s not a problem to drink a soy milk with your protein shake here and there.
Why Not just drink whey though or eat more protein with your meals? If I want a snack I mix protein powder with oatmeal and then maybe add blueberries and low fat yoghurt