Rex

Rex by Bagley,Rex has 478 kcal per 100 g. One serving (31 g) is about 148 kcal.

Rex contains 8.6 g of protein per 100 g — about 2.7 g per 31 g serving.

It has 5.3 g of saturated fat per 100 g — 26% of the daily value, which counts as high.

Yes — 1038 mg of sodium per 100 g, about 45% of the daily value.

Nutri-Score weighs negatives (calories, sugar, saturated fat, sodium) against positives (fiber, protein) per 100 g. Points against come from calorie density (478 kcal), saturated fat (5.3 g), sodium (1038 mg); points in favor come from protein (8.6 g). Overall that places it in band D.

About 21 g of Rex equals 100 kcal. It is energy-dense, so small amounts add up quickly.

Yes — 478 kcal per 100 g makes it calorie-dense; a 50 g portion is already about 239 kcal.

Per 100 g it has 5.1 g sugar and 22 g fat (5.3 g saturated). Fat provides 41% of its calories, so portion size matters most here.