Beurre

Beurre by JB has 420 kcal per 100 g. One serving (31 g) is about 130 kcal.

Beurre contains 6.8 g of protein per 100 g — about 2.1 g per 31 g serving.

Yes — carbohydrates provide 71% of its calories (78.5 g per 100 g, of which 0 g is sugar).

Yes — only 0 g of sugar per 100 g. Most of its 78.5 g of carbs come from starch and fiber rather than sugar.

Yes — just 0 mg per 100 g (0% of the daily value), which qualifies as low sodium.

Nutri-Score weighs negatives (calories, sugar, saturated fat, sodium) against positives (fiber, protein) per 100 g. Points against come from calorie density (420 kcal). Overall that places it in band B.

About 24 g of Beurre equals 100 kcal. It is energy-dense, so small amounts add up quickly.

Yes — 420 kcal per 100 g makes it calorie-dense; a 50 g portion is already about 210 kcal.