Plain Bagels

Plain Bagels by Sainsbury's has 538 kcal per 100 g. One serving (85 g) is about 457 kcal.

Plain Bagels contains 9.6 g of protein per 100 g — about 8.2 g per 85 g serving.

Yes — carbohydrates provide 76% of its calories (49.3 g per 100 g, of which 4.6 g is sugar). It also delivers 4.1 g of fiber.

It provides 4.1 g of fiber per 100 g — 15% 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 (538 kcal); points in favor come from fiber (4.1 g), protein (9.6 g). Overall that places it in band B.

About 19 g of Plain Bagels equals 100 kcal. It is energy-dense, so small amounts add up quickly.

Yes — 538 kcal per 100 g makes it calorie-dense; a 50 g portion is already about 269 kcal.

Per 100 g it has 4.6 g sugar and 2.5 g fat (0.4 g saturated). Fat provides 9% of its calories, so portion size matters most here.