Nutritional yeast flakes were first manufactured in 1975. This fortified food product is a valuable source of high quality protein, amino acids, vitamins and fiber. Red star nutritional yeast flakes is a tasty food product that can be added to your meals and drink. Sprinkle on popcorn for a great tasting snack. Harvested for good health. Large flake. country of origin : united states is kosher : yes size : 6 # pack of : 1 selling unit : each