This myth, which persists even among health care professionals, was erroneously reinforced when Frances Moore Lappe wrote Diet for a Small Planet in the late 1960s. Due to convincing refuting research, Ms. Lappe retracted her statements in the 1981 revision of her book. It is now widely accepted among the nutrition community that protein combining is unnecessary. Although one or more EAAs may be present in small amounts, it is possible to meet your protein requirements consuming one plant food, provided you eat enough of this food. If you consume adequate total calories to maintain your body weight and eat a variety of foods, you should easily meet your protein needs.
Most plant foods contain some protein.
Even broccoli contains protein. Vegetables also contain protein, but in smaller amounts. Let's look at the exact amount of protein in some of these foods. 10 Tempeh 4 oz. Lentils cup 9 Peanut butter 2 Tbsp.