Slow-Braised Grass-Fed Lamb Neck Fillet with Roasted Garlic, White Wine & Lemon Gremolata
The unsung hero of the lamb counter — braised low and slow until the meat surrenders to something truly extraordinary.
There is a particular satisfaction in choosing the cut everyone else walks past. Lamb neck fillet sits quietly at the back of the counter — cheaper than the leg, less glamorous than the rack, rarely photographed — and it rewards the cook who chooses it with something the more celebrated cuts simply cannot offer: a depth of flavour that builds over two-and-a-half hours in a slow oven until the braising liquid is sticky and mahogany-dark, the meat yielding and trembling, and every mouthful tasting unmistakably, almost overwhelmingly, of lamb. This is early June cooking: the kitchen gentle with heat, the oven doing its patient work while the garden greens outside are still tender and new.
The neck is one of the most exercised parts of the animal. Lambs are constantly grazing, turning their heads, moving — and that constant movement builds dense, well-worked muscle threaded through with intramuscular fat and connective tissue. It is this connective tissue, specifically collagen, that makes the cut so extraordinary in a braise: under sustained, moist heat it dissolves into gelatin, thickening the cooking liquid and coating the meat in a glossy, unctuous sauce that no amount of cornflour could replicate.
Neck fillet is the boneless version, cut cleanly from the vertebrae and giving you a smooth log of meat that browns evenly and cooks predictably. When you’re buying, look for a deep rose-pink colour with visible streaks of creamy white fat running through — that marbling is your promise of flavour. Grass-fed lamb will have a richer, more mineral sweetness than grain-finished; the fat turns slightly yellow rather than stark white, which is entirely correct and desirable. A good neck fillet from a dry-aged animal will have a faint, pleasant gamey note that becomes complex and rounded in the braise rather than aggressive.
Avoid anything pale, grey-tinged or with wet, waterlogged-looking flesh — that’s a sign of age or poor handling. What you want is a piece that looks alive, with the firm, slightly springy feel of properly rested, well-handled meat. Ours is grass-fed, dry-aged and cut to order.
- 900g–1.1kg grass-fed dry-aged lamb neck fillet, cut into 5cm pieces
- 2 tbsp beef dripping or light olive oil
- 1 large onion, roughly diced
- 2 medium carrots, roughly diced
- 2 celery sticks, roughly diced
- 6 garlic cloves, peeled and left whole
- 1 preserved lemon, pith removed, rind finely chopped
- 200ml dry white wine (a Mâcon or Picpoul — not cooking-wine grade)
- 450ml good lamb or chicken stock, hot
- 1 x 400g tin whole plum tomatoes
- 3 sprigs fresh thyme
- 2 sprigs fresh rosemary
- 1 bay leaf
- 30g cold unsalted butter, diced
- Sea salt and freshly ground black pepper
- Small handful (about 20g) flat-leaf parsley, finely chopped
- 1 small garlic clove, finely grated on a microplane
- Finely grated zest of 1 unwaxed lemon
- Soft polenta or creamy mashed potato
- Wilted spinach or braised runner beans
- Good crusty bread to mop the sauce
- Heat the oven. Preheat to 150°C / 130°C fan / Gas 2. You want a long, low, patient heat — this is not the place to rush things.
- Dry and season. Pat the lamb neck pieces thoroughly dry with kitchen paper — the single most important step for good colour. Season generously all over with sea salt and black pepper.
- Brown the lamb. Heat beef dripping in a heavy casserole over a high flame until shimmering. Brown the lamb in batches — never crowding the pan — until each piece is a burnished mahogany on all sides, about 3 minutes per batch. Set aside on a warm plate.
- Soften the vegetables. Reduce heat to medium. Add onion, carrot and celery with a pinch of salt. Cook, stirring occasionally, for 8–10 minutes until softened and lightly coloured.
- Add aromatics. Add the whole garlic cloves and chopped preserved lemon rind. Stir for 2 minutes.
- Deglaze. Pour in the white wine and scrape up every browned bit from the base. Let the wine bubble and reduce by half, about 3 minutes.
- Build the braise. Add the hot stock and plum tomatoes, crushing them roughly as they go in. Add thyme, rosemary and bay. Return the lamb and any resting juices. The liquid should sit two-thirds up the meat. Bring to a gentle simmer, cover tightly and transfer to the oven.
- Braise low and slow. Leave undisturbed for 2 hours, then check: the lamb should yield easily to a spoon and a skewer should pass through with no resistance.
- Make the gremolata. Combine the chopped parsley, grated garlic and lemon zest in a small bowl. Cover and set aside at room temperature.
- Finish the sauce. Transfer the lamb to a warm plate and cover with foil. Discard the herb sprigs and bay. Place the casserole over medium-high heat and reduce the liquid by a third, 8–12 minutes, until glossy and sauce-like. Whisk in the cold butter a piece at a time until emulsified. Taste and adjust seasoning.
- Serve. Return the lamb to the sauce and warm through for 2 minutes. Serve over soft polenta or mash with a generous pinch of gremolata on each portion.
The key to a great braise is converting tough collagen into silky gelatin, and concentrating flavour through slow reduction. The high initial heat of the browning step triggers the Maillard reaction, producing hundreds of complex flavour compounds that form the deep, roasted backbone of the sauce. Skip this step and you get boiled meat.
Lamb neck is rich in collagen — far more than shoulder or leg — which is why it rewards a longer cook. Collagen needs sustained heat above 80°C to unwind into gelatin, and the slow oven provides exactly this without driving off too much moisture or toughening the muscle fibres the way a vigorous boil would. At 150°C, the liquid barely trembles: hot enough to dissolve collagen, gentle enough not to seize the proteins.
The preserved lemon does two jobs: the salt-cured rind gives a rounded, fermented citrus note that blooms in the fat during the early softening stage, while its acidity balances the richness of the lamb throughout the long cook. The gremolata restores brightness at the finish, cutting through the sticky sauce with something raw, green and sharp.
Bone-in lamb neck (scrag end) works beautifully and is even cheaper; allow an extra 20–30 minutes and watch for the meat pulling from the bone as your doneness signal. Diced lamb shoulder is an excellent substitute. Avoid leg — it’s too lean for a long braise and will dry out.
If you don’t have preserved lemon, a strip of fresh lemon zest added to the braise (removed before serving) plus a squeeze of juice at the end gives some brightness, though without the fermented depth. A teaspoon of good-quality capers stirred through near the end also works well.
A dry rosé works in place of white wine in summer and gives a slightly lighter, more floral sauce. Or replace the wine entirely with extra stock and a tablespoon of sherry vinegar. Beyond polenta and mash, this is wonderful with soft flatbreads and a simple cucumber, mint and feta salad, or over orzo cooked in the braising liquid.
This dish is genuinely better made the day before. Cool to room temperature, cover and refrigerate overnight. The fat will solidify on the surface; lift it off with a spoon before reheating gently on the hob or in a 160°C oven for 30 minutes. Make the gremolata fresh on the day of serving. Leftovers keep for 3 days refrigerated or up to 3 months frozen — freeze in the sauce to prevent the meat drying out.
- Not drying the meat before browning. Moisture on the surface steams before it sears, preventing the Maillard browning you need for flavour. Pat each piece dry with kitchen paper and take your time in the pan — colour equals flavour.
- Overcrowding the pan. Too many pieces at once lowers the pan temperature and the meat steams rather than sears. Brown in two or three batches and give each piece room to sit flat.
- Opening the oven too often. Every lifted lid drops the braise temperature. Set the timer for 2 hours and trust the process. The low, consistent oven heat is doing the work.
Ask your butcher to tie the neck fillet at 3cm intervals before cutting — it helps the pieces hold their shape through the long braise and makes for a more elegant plate.
Wine: A southern Rhône red — Gigondas or Côtes du Rhône Villages — mirrors the rosemary and thyme in the braise. Beer: A malty amber ale cuts the richness cleanly. Non-alcoholic: Chilled elderflower and apple press with a squeeze of lemon.
Soft polenta with generous butter and Parmesan is the classic pairing — it carries the sauce without competing. Creamy mashed potato or a white bean purée also work beautifully. Wilted spinach with garlic and olive oil, or braised runner beans just coming into season. Good crusty bread to chase the last of the sauce around the bowl — it would be a crime to leave any behind.
What is lamb neck fillet and why is it good for braising?
Lamb neck fillet is a boneless cut from the neck — one of the most exercised parts of the animal — with dense muscle, intramuscular fat and high collagen. Under long slow moist heat, collagen converts to gelatin, giving the braise a luxurious silky body and the meat a spoon-tender texture. Quick-cook methods make it tough; slow braising makes it extraordinary.
Can I braise lamb neck fillet the day before?
Yes, and it genuinely improves overnight. Cool to room temperature, refrigerate, and skim the solidified fat from the surface before reheating gently. The flavours deepen and meld considerably — many restaurant kitchens prepare braises 24 hours ahead for precisely this reason.
What can I substitute for preserved lemon?
A strip of fresh lemon zest in the braise (removed before serving) plus a squeeze of juice in the finished sauce will provide brightness. A teaspoon of capers stirred in near the end also works well. Neither fully replicates preserved lemon’s fermented depth, but both are good.
How do I know when the lamb neck is ready?
A skewer passes through with no resistance and the meat yields easily to a spoon — but pieces still hold their shape rather than collapsing. If it shreds at 2 hours, the cook is slightly over, but the flavour will still be excellent; serve as a rustic pulled braise over polenta.
Can I cook this in a slow cooker?
Absolutely. Brown the lamb and build the base as described, then transfer to your slow cooker. Cook on low for 6–7 hours or high for 4–5 hours. Reduce the braising liquid separately in a saucepan — the slow cooker won’t concentrate it. The texture will be slightly softer but every bit as flavourful.
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