Mutton liver (kaleji) fry

One serving of Mutton liver (kaleji) fry — 100 g — comes to 170 kcal, 20.3 g protein, 0 g carbs and 9.9 g fat. Scaled to 100 g it works out to 170 kcal and 20.3 g protein, which makes it dense in protein for a mutton item. That single serving is about 11.3% of a 1,500 kcal day and 8.5% of a 2,000 kcal day, so it can carry real weight in a protein-focused plan without much extra planning.

Walking off Mutton liver (kaleji) fry takes roughly 4,250 steps, using the rough approximation of 0.04 kcal burned per step (a population-average estimate for a moderate walking pace, not a personalised number). At ₹70 a serving it costs about ₹69 for every 20 g of protein it delivers, which is a mid-to-high price for protein compared with dal, eggs or soya chunks. It fits a non-vegetarian diet. It works at lunch and dinner. It's a genuinely high-protein choice for its calories.

If you want variety without changing the macros much, the closest swaps in the mutton category are Mutton biryani, Mutton (goat) curry, Mutton do pyaza / rogan josh (restaurant), Mutton keema matar — each keeps a similar role on the plate while shifting the exact protein-to-carb balance a little.