Ultimate Slow Roast Lamb Recipe: Best Lamb Shoulder Technique (2024)

Ultimate Slow Roast Lamb Recipe: Best Lamb Shoulder Technique (1)

My slow roast lamb recipe is possibly one of my favourite meals of all time. The lamb is sweet, fragrant, and beautifully textured. It is melt-in-the-mouth tender with a succulently chewy skin (bark). It’s the simplest, and most rewarding roast meats and I have yet to find any other way of doing this that tastes any better. Slow roast lamb is simply decadent.

Ultimate Slow Roast Lamb Recipe: Best Lamb Shoulder Technique (2)

We love slow roast lamb so much in our family that we chose it as our meat for our wedding day menu – our caterers did an amazing job, and we still get loads of compliments on our wedding food.

I have been making my slow roasted lamb like this for years and it never fails to impress. So if you are a fan of lamb, you have to try this!

I choose a lamb shoulder joint rather than a leg because the shoulder has the lines of fat running through it that, when cooking slowly in the oven for hours, will melt and lubricate the meat. The result is lamb that is super succulent and tender. So, so tender. So tender in fact that the shoulder bone can be pulled clean out from the meat. The meat itself practically crumbles.

The outside of the slow roast lamb kind of caramelises and forms are tougher, chewy skin. It’s full of flavour from the marinade and makes for a welcome contrast to the moist meat. It’s unbelievably delectable.

Ultimate Slow Roast Lamb Recipe: Best Lamb Shoulder Technique (3)Ultimate Slow Roast Lamb Recipe: Best Lamb Shoulder Technique (4)Ultimate Slow Roast Lamb Recipe: Best Lamb Shoulder Technique (5)

I usually cook a couple of lamb shoulder joints at once, I use some of the meat for a Sunday Roast Dinner with my family. The rest of it I save for a leftovers meal such as Shepherd’s Pie, curry, a fresh salad in the summer, or my favourite … leftover sandwich complete with cold stuffing and mayo.

I prefer to get my lamb shoulder from my local organic butcher, the quality is so much better with more a marble effect of the fat running through the meat. Generally I use a 1.75 – 2kg shoulder to feed around 4-6 people. Adjust the cooking time according to the size of the meat.

Ultimate Slow Roast Lamb Recipe: Best Lamb Shoulder Technique (6)Ultimate Slow Roast Lamb Recipe: Best Lamb Shoulder Technique (7)Ultimate Slow Roast Lamb Recipe: Best Lamb Shoulder Technique (8)

And I cannot recommend enough using the shoulder of lamb rather than the lamb, it’s 100% my top choice of cut for slow roasting (but if you do only have a leg of lamb, perhaps consider pot roasting it on a slow cooking basis. The extra liquid will help keep the moisture in the meat).

Lamb shoulder is often overlooked as a joint, with many reaching for the leg of lamb, but give the shoulder a go in the slow roast fashion, and you will be pleasantly surprised!

And the best thing about roasting a huge batch of lamb is the leftovers!

More lamb recipes you might like:

Lamb, Pomegranate and Mint Pie

Lamb Dhansak

Glazed Ham in Ginger Beer

Ultimate Slow Roast Lamb Recipe: Best Lamb Shoulder Technique (9)

Ultimate Slow Roast Lamb Recipe: Best Lamb Shoulder Technique (10)

Slow Roast Lamb (serves 4+)

Ingredients

* minimum 1.5kg Shoulder of Lamb

* at least 1-2tbsp Garlic Puree

* 1tsp Dried Chilli Flakes

Method

1. Remove the lamb shoulder from the fridge at least an hour before cooking, if possible. Preheat the oven to 180C (fan).

2. In a small bowl mix together the garlic puree and chilli flakes. Pop the lamb onto a large baking tray and spread the mixture all over the meat.

3. Place the lamb in the preheated oven for 30 minutes.

4. After 30 minutes lower the temperature of the oven to 130C (fan). Allow to slow cook for at least 4 or 5 hours, 6 is usually the best length of time for a 1.5-2kg joint. Be sure to baste the joint once an hour.

5. Remove the lamb from the oven, cover loosely with foil and allow it to rest for a minimum of 30 minutes.

6. To carve the joint use a sharp knife to loosen the thick skin (aka the bark) particularly around the bone. The meat should then easily come away from the bone. Either slice into thick chunks or use a large carving fork to shred the meat apart.

7. Serve immediately with your roast dinner trimmings, or allow to cool to use in other dishes such as shepherds pie, curry or a leftovers sandwich.

Enjoy!

TOP TIP #1 – Use your favourite spices to create your own unique marinade for the lamb shoulder. Great spices for this meat include cumin, thyme, rosemary, paprika, cumin seeds, whole garlic (pierce the lamb with a sharp knife and pop slithers of garlic cloves straight in), black pepper, fennel seeds, coriander.

TOP TIP #2 – If you prefer not to have the chewy skin/bark, simply cover the roasting tin loosely with foil for the slow roasting process.

***

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Ultimate Slow Roast Lamb Recipe: Best Lamb Shoulder Technique (11)

Ultimate Slow Roast Lamb Recipe: Best Lamb Shoulder Technique (2024)

FAQs

What temperature should lamb shoulder be cooked at? ›

Well Done
Rare48-50°crested 52-54°c
Medium Rare52-54°crested 56-58°c
Medium56-58°crested 60-62°c
Well Done65-68°crested 70-75°c

Does lamb shoulder get more tender the longer you cook it? ›

Slow cooking in liquid transforms tougher cuts of lamb into fork-tender meat. Neck, shoulder and belly, either diced or as whole joints, are the best cuts for slow cooking and need to be cooked for at least 2 hrs at 150C to soften the meat.

Is lamb shoulder or leg better for slow roasting? ›

Lamb shoulder is usually larger and has more connective tissue, so it needs to be cooked for longer than the leg before it becomes tender. Lamb leg is smaller and has less fat and connective tissue, so it cooks faster but it can be drier if it's overcooked or not cooked in enough liquid.

What temperature is slow cooked lamb done at? ›

Place the lamb fat side up on the grill rack and smoke for 4 hours at a steady temperature of 120° – 150°C, keeping the lid covered throughout this time. 5. Once the internal temperature of the lamb gets to around 80°C remove the water pan out of the grill, in order to help the heat build up higher and more intensely.

How long should shoulder of lamb be cooked? ›

Heat oven to 160C/140C fan/gas 3. Put 3 onions, each sliced into 3 thick disks, in the roasting tin, resting the lamb on top. Cover with tented foil and roast for 5 hrs, basting the meat occasionally. Remove from the oven, transfer the lamb to a board and allow to rest, covered, for at least 30 mins.

How long to cook shoulder of lamb per pound? ›

As a rough guide, to roast a lamb joint allow about 45 minutes' cooking time per kilo in weight (or about 25 minutes per pound). Place in a preheated oven at a high temperature initially (230°C/gas mark 8), then after about 15 minutes, lower the temperature (to 200°C/gas mark 6) for the remainder of the cooking time.

How do you keep lamb shoulder from drying out? ›

Lower temp = more succulent meat – Tough cuts like lamb shoulder need slow-cooking to tenderise them. The lower the roasting temperature, the less total moisture evaporation and thus juicier meat. 3-hour lamb is cooked at 180°C/350°F, while the 12 hour lamb is cooked at only 100°C/212°F.

What is the preferred cooking method for lamb? ›

It can be traditionally roasted but is best slow-roasted, pot-roasted or braised with liquid until practically falling apart. Shoulder can also be diced for stewing, or cut into shoulder chops. A pre-sliced roast is convenient, but it tends to dry out in the oven.

How is lamb shoulder most often prepared? ›

Ideal Cooking Methods: Due to its higher fat and connective tissue content, the lamb shoulder shines when subjected to various slow-cooking methods. Braising, stewing and slow roasting break down its tissues, rendering the meat succulently tender.

Why is my lamb shoulder tough? ›

Because the shoulder is a heavily used part of the animal, it can be tough. This means for it to become tender and melt in your mouth, it needs time for the meat to release the tension and for the fat to completely render down. Give yourself around 8 hours to get this one done, plus a little extra for prep.

Do you need to brown lamb before slow-cooking? ›

Brown the lamb first, in batches if necessary. This will maintain a high heat in the pan and caramelise the juices, which will improve the colour and flavour of the meat. Although lamb is a little more fatty than other meats, don't trim all of it away before cooking.

What is the best cut of lamb for slow roasting? ›

Lamb shank is a super-simple, cheaper cut that goes a long way. Taken from the lower part of the back legs, there is a lot of collagen in the shank, which, when cooked slowly, gives the meat a lovely soft, melting texture, making this another cut that's perfect for stews and slow-cooking.

How do you know when lamb shoulders are done? ›

If you are cooking a pork shoulder, lamb shoulder or beef brisket you will want to cook them to about 195 degrees and then let them rest. Typically, they will carry over to about 205. By that time your meat should be tender enough to pull apart with your fingers.

What temperature do you cook lamb at and for how long? ›

For a medium cooked lamb, which is perfectly pink on the inside, budget about 25 minutes per pound or until the internal temp registers somewhere around 130°F (about 1 ½ to 2 hours in a 325 degrees F-heated oven).

What temperature should lamb be well done? ›

An exceptional dinner presentation. Carve against the grain for the best texture.
SizeCooking MethodInternal Temp*
5–7lbsRoast 325˚ Fmed-rare 145˚F medium 160˚F well-done 170˚F

Can lamb shoulder be medium rare? ›

Safest Temperature and Doneness To Eat Lamb. In our experience, we found most lamb cuts, whether a rack of lamb or lamb loin chops, taste best when served medium rare. So, the meat's internal temperature should reach 130 degrees Fahrenheit (54 degrees Celsius).

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