Tuna

Tuna by Woolworths has 199 kcal per 100 g. One serving (95 g) is about 189 kcal.

Tuna contains 15.4 g of protein per 100 g — about 14.6 g per 95 g serving.

Yes — 15.4 g of protein per 100 g, supplying 31% of its calories. That makes it a good protein source.

With 1.5 g total carbs (about 1.5 g net carbs) per 100 g, it fits low-carb and keto eating patterns in normal portions.

Nutri-Score weighs negatives (calories, sugar, saturated fat, sodium) against positives (fiber, protein) per 100 g. It collects almost no negative points (low sugar, saturated fat and sodium); points in favor come from protein (15.4 g). Overall that places it in band B.

About 50 g of Tuna equals 100 kcal.

Per 100 g it has 0.1 g sugar and 14.7 g fat (1.5 g saturated). Fat provides 66% of its calories, so portion size matters most here.