Nutritional Yeast

Nutritional Yeast has 361 kcal per 100 g. One serving (5 g) is about 18 kcal.

Nutritional Yeast contains 50 g of protein per 100 g — about 2.5 g per 5 g serving.

Yes — 50 g of protein per 100 g, supplying 62% of its calories. That makes it an excellent protein source.

Yes — only 1 g of sugar per 100 g. Most of its 19 g of carbs come from starch and fiber rather than sugar.

Yes — just 100 mg per 100 g (4% of the daily value), which qualifies as low sodium.

It provides 20 g of fiber per 100 g — 71% of the daily value, making it a high-fiber food.

Nutri-Score weighs negatives (calories, sugar, saturated fat, sodium) against positives (fiber, protein) per 100 g. Points against come from calorie density (361 kcal); points in favor come from fiber (20 g), protein (50 g). Overall that places it in band A.

About 28 g of Nutritional Yeast equals 100 kcal. It is energy-dense, so small amounts add up quickly.