Preparation Authority tier 1

Slow-Roasted Shoulder of Lamb: Collagen Conversion

The slow-roasted lamb shoulder appears in virtually every meat-cooking tradition — from French gigot to Turkish kuzu tandır to Moroccan mechoui to this Jerusalem version spiced with baharat and pomegranate. The physical principle is universal: collagen in connective tissue converts to gelatin at sustained low temperature, producing meat that falls from the bone with the pressing of a finger. The spicing is cultural; the collagen chemistry is universal.

Bone-in lamb shoulder cooked at low temperature (160–170°C) for 4–6 hours until the collagen has completely converted to gelatin and the meat pulls from the bone without resistance. The long cook produces a different texture than braising — the meat is dry-roasted but the fat and gelatin keep it moist from within.

Slow-roasted lamb shoulder succeeds through textural drama — the contrast between the caramelised, spiced crust and the falling, unctuous interior. The gelatin converted from collagen gives the meat a richness that lean cuts can never achieve. It asks for acid contrast: pomegranate, preserved lemon, or a sharp herb sauce to cut through the fat.

- Low and slow is non-negotiable — high heat denatures the muscle proteins before the collagen converts, producing dry, tough meat - The bone-in shoulder has more collagen than the leg — it is the correct cut for this technique - Covering with foil for the first half of cooking prevents surface drying before the collagen begins to convert [VERIFY timing: foil on for first 2–3 hours, off for final 1–2 hours] - The final uncovered period renders the surface fat and produces the crust - Resting is essential — the muscle fibres need time to reabsorb the juices redistributed during cooking [VERIFY rest time: minimum 20 minutes]

OTTOLENGHI JERUSALEM — Technique Entries OT-01 through OT-25

Turkish kuzu tandır (same slow-roast collagen logic, underground oven), Moroccan mechoui (same cut, same principle, different spice), Greek kleftiko (same method, clay-pot variation), Peruvian pachama