Greens have a surprising amount of available protein - in the form of amino acids, which are protein building blocks. There are times when I want a protein boost and turn to a quality supplement, such as hemp. Sometimes I just use hemp seeds, sprinkled on soup or salads. Since I have a green smoothie daily, hemp powder is usually my go-to for that extra protein.
I really like Manitoba Harvest hemp powders. The processing is done without heat, preserving all the nutrients of powerhouse hemp. Texture is a tiny bit grainy but not really noticable in amidst the greens and fruits.
I order the hemp seeds and powder directly from the source in Canada, although I have found a few "local" (over 50 miles away) healthfood stores or herb stores that do carry Manitoba Harvest products. The small shipping cost more than offsets the price of gas, which is another reason to mail-order!
Explore several types of hemp products (seeds, oil, powders) at http://manitobaharvest.com/. They have really good sales and promotions from time to time. A quality company, great service!