A Good Source of Protein

When a food is cited as a “good source of protein”, consider how much protein it would supply if half of your calories for the day came from it. Peanut butter is often described as a “good” or “great” source of protein. 10 tablespoons of peanut butter supplies about 1000 calories and 45 g of protein - on the low side for a daily intake, especially considering the it doesn’t have a great protein quality (PDCAAS) score.