Smoked Bone-In Leg of Lamb
By Brendan Fitzgerald · Irish Heritage Cook · Updated 2026-05-08
6-pound bone-in leg of lamb smoked at 250°F for 4 hours to 135°F internal. Salt and butter only, no garlic or rosemary. Feeds 8 at $5 per serving.
Carnivore smoked leg of lamb is a 6-pound bone-in leg smoked at 250°F for about 4 hours to an internal temperature of 135°F for medium-rare. Salt is the only seasoning; butter rubbed on the surface 30 minutes before pull adds richness without breaking carnivore framing. Pull at 130°F since the leg's residual heat carries it 5°F higher during the rest. A 6-ounce cooked serving delivers 42g protein, 20g fat, and 350 calories. Bone-in lamb leg costs $7 to $11 per pound at most grocery stores and goes on sale around Easter and Passover; a 6-pound leg yields 8 servings at roughly $5 each. Slice across the grain in thin slabs — lamb leg has long, parallel muscle fibers, so the cut direction is more obvious than on cuts like tri-tip. Pulse-protective fat in lamb is mostly subcutaneous; trim down to ¼ inch before cooking but keep the shoulder cap intact so it bastes the lean meat as it renders during the smoke.
Ingredients
| Ingredient | Protein | Fat | Calories |
|---|---|---|---|
| 6 oz lamb leg cooked, sliced (per serving) | 42g | 17g | 320 |
| ⅓ tbsp butter (per serving) | 0g | 4g | 30 |
| Coarse salt | 0g | 0g | 0 |
| Per serving | 42g | 20g | 350 |
Macros per serving (after cooking and any fat draining). Source: USDA FoodData Central.
Instructions
- 1
Trim subcutaneous fat down to ¼ inch — leave a thin layer for self-basting; trim any silver-skin connective tissue.
- 2
Salt the leg generously on all sides with 2 tbsp coarse salt. Let sit at room temperature 1 hour while smoker preheats.
- 3
Heat smoker to 250°F. Add 3 wood chunks (oak for clean flavor, cherry for color and slight sweetness; avoid hickory for lamb — too aggressive).
- 4
Place the leg on the grate fat-cap up. Insert probe thermometer into the thickest part avoiding the bone.
- 5
Smoke for 3.5 to 4 hours until internal temperature reaches 125°F.
- 6
Rub 3 tbsp softened butter over the entire surface of the leg. Continue smoking for 15 minutes until butter sets and internal temp reaches 130°F.
- 7
Pull from the smoker at 130°F (carryover brings it to 135°F during rest for medium-rare).
- 8
Rest 20 minutes loosely tented. Slice thin across the grain — leg fibers run lengthwise; cut perpendicular to them.
Nutrition per Serving
Frequently Asked Questions
Bone-in or boneless leg?
Bone-in. The femur retains heat through the long smoke and gives you a built-in temperature anchor (avoid hitting bone with the probe). Bone-in legs also cook 10 to 15% slower, which is ideal for smoke flavor depth. Boneless leg-of-lamb roasts (tied or rolled) cook faster and slice cleaner but lose the connective-tissue flavor that the bone provides through long contact.
Why no garlic or rosemary?
Both are plant matter, excluded from strict carnivore. Lamb has strong enough flavor on its own (gamier than beef due to branched-chain fatty acids in lamb fat) that herbs aren't necessary for taste — the herbs are a cultural pairing, not a culinary requirement. Smoke and butter cover the same flavor function. If you allow some plants, garlic-and-rosemary lamb is lovely; this recipe is the strict version.
What internal temperature for lamb leg?
130 to 135°F medium-rare for the best texture and flavor. Lamb fat begins to taste tallowy and harsh at temperatures above 145°F (well-done) — the same fatty-acid composition that makes lamb distinctive at lower temperatures becomes unpleasant at higher ones. Pull from the smoker at 125 to 130°F and let carryover finish the cook during the rest.
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