Meat from an adult sheep — stronger flavoured, tougher, and better suited to slow cooking than lamb.
Mutton is meat from a sheep over a year old. Lamb is the same animal younger. The
age difference does two things: it deepens the flavour considerably, and it toughens the
muscle, because a working animal develops more connective tissue.
That connective
tissue is why mutton is treated so differently in the kitchen. Cooked fast it is chewy.
Cooked slowly it becomes the best thing in the category, as the collagen breaks down into
gelatine.
Nutritionally it sits with the other red meats: high in heme iron, high in
B12, high in zinc, and higher in saturated fat than poultry.
Per 100g cooked. Fat content varies enormously by cut — shoulder and belly run far higher than leg.
Based on the nutrients and fibre this food supplies. These are supporting foods, not treatments.
Slow cooking is not optional. Mutton needs two hours minimum, or
40–50 minutes under pressure. Anything faster and the collagen has not converted.
Trim the hard fat, keep the marbling. The thick white fat on the outside adds
little. The fat threaded through the muscle is what keeps it moist.
Acid helps
break it down. Yoghurt, papaya or vinegar in the marinade genuinely tenderises
— the enzymes and acid start the work before the heat does.
Skim the
fat off the top once the curry has rested. A surprising amount rises, and it is easy
calories to remove.
Mutton's usefulness is heme iron. Plant iron absorbs at roughly 2–10%; heme
iron from meat absorbs at 15–35%, and its uptake is not blocked by tea, coffee or
phytates the way plant iron is.
For anyone with genuine iron deficiency who eats meat,
a modest portion of red meat does more than a large plate of greens. That is not an argument
against greens — it is an argument for knowing which lever you are pulling.
High cholesterol: mutton is higher in saturated fat than poultry.
Cut choice and trimming matter more than avoiding it.
Gout or high uric acid: all meat contains purines, and organ
meats most of all. Meat and seafood purines trigger flares far more reliably than plant
purines do.
Kidney disease: protein load often needs limiting. This
needs your doctor's numbers, not a general rule.
Pregnancy: cook all
meat through — no pink — and avoid liver because of its vitamin A content.
This is information, not a prescription. If you are managing a diagnosed condition or taking medication, talk to your doctor before making a large change to your diet.
Nutrition figures on this page come from standard food composition data. These links let you check the numbers and read the underlying research yourself rather than taking our word for it.