26 of the Best High Protein Foods

24. Spirulina

Spirulina is an edible algae that grows in both salt and fresh waters. This blue-green algae contains fat-soluble vitamins like A, E, and K, as well as healthy fatty acids, minerals, and beta-carotene. A single tablespoon offers four grams of protein and nearly half the daily value of copper.

This sea vegetable is usually sold in powdered form. Some people mix the powder into their daily protein shakes, while others like to add it to juices and desserts.