5 Sources of Complete Protein for Vegetarians


4. Soy

Soy is the best source of vegetarian protein because it contains the amino acid methionine, which is not found in other beans. But you should know that different forms of soy contain different amounts of protein. For example, ½ cup of hard tofu will deliver 10 grams of protein, and tempeh or natto has 15 grams per ½ cup.

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