Slow-roasted spiced lamb is the centrepiece of festive Palestinian and broader Levantine cooking — the dish that defines celebration, hospitality, and the full expression of the spice tradition. The technique is the same across cultures that cook whole or large-cut lamb over long periods: sufficient time and sufficient heat to convert collagen to gelatin while allowing the spice crust to penetrate deep into the flesh. Ottolenghi's Jerusalem version uses baharat and a long overnight marinade.
A large cut of bone-in lamb (shoulder or leg) marinated in a spice paste, then slow-roasted at low temperature for several hours until the collagen has converted to gelatin and the meat pulls from the bone without resistance. The spice crust caramelises on the exterior while the interior remains moist from the gelatin released during the long cook.
Slow-roasted spiced lamb asks for acid at service — pomegranate molasses, lemon, yogurt — to cut the richness of the gelatin and fat. The spice crust provides complexity; the acid provides lift. Without acid the dish is magnificent but heavy. With it, every bite resets the palate for the next.
- Bone-in cuts only — the bone conducts heat to the interior and releases gelatin and marrow that baste the surrounding meat from within - The marinade must contain fat (olive oil) to carry fat-soluble spice compounds into the meat — dry spice rubs penetrate the surface only - Low temperature (160–170°C) for extended time (4–6 hours for a shoulder) — high-heat roasting produces a dry exterior and undercooked interior at this size [VERIFY temperatures and times] - The meat is done when a skewer inserted to the centre meets no resistance and the juices run clear — not by time alone - Resting for 20–30 minutes before pulling is essential — the gelatin needs to partially reset before the meat can be pulled in long, intact strands Decisive moment: The pull test — when a fork inserted and twisted meets no resistance and the meat separates in long, clean strands. Any resistance means collagen conversion is incomplete.
OTTOLENGHI JERUSALEM — Technique Entries OT-01 through OT-25