Skip to main content

How to spit roast lamb in 5 easy steps

Ever wanted to go primal and roast a whole lamb? Here's how

Spit roast lamb.
NicolasMcComber/Getty Images

One of the best ways to cook meat is by an open fire, and there are several ways to accomplish this — a clean barbecue grill, a spit (also known as rotisserie), or even a campfire. There’s nothing better than cooking meat over an open flame, especially during warm days of late summer, when we’re often outside. The smoky flavor, the slight char, and the dripping fat all add to the roasted meat experience.

You can roast just about any meat outdoors and by using many techniques. We’re going to be discussing how to roast a whole lamb on an outdoor rotisserie. Here’s how to spit whole lamb in five steps.

Set of kitchen knives sitting side by side on a black counter.
Savernake Knives/Unsplash

Prepare your mis en place

Mis en Place is the French phrase for “put in place” or “everything in its place.” What we’re talking about here is the entire process. You need to have the spit ready, the coals, the wood, the herbs and spices, any cutting tools, butcher’s twine and needle, and of course, the lamb.

The process for spit roasting is slow and long, so it’s better to have extra fuel — and by fuel, we mean the coals and natural chemically untreated wood for the fire.

For your remaining ingredients, you’ll be roasting an entire lamb, so make sure you have plenty of cooking oil, herbs, and spices on hand. Lamb goes great with garlic, rosemary, and lemons, but find a recipe that works for you. Now would be a good time to prepare your basting liquid as well.

Whole raw lamb and knife on the wooden board.
Oksana_S/Adobe Stock

Prepare the lamb

The lamb is going to be big and bulky, so you should have cleared some table space for it already and lined the area with butcher paper. Trim the lamb up by removing any noticeable silver skin. Take some of the oil, herbs, and spices and rub them all over the cavity of the lamb and then leave those aromatics in the cavity. Sew up the cavity using the butcher’s twine and needle.

Rub down the exterior of the lamb with more oil, herbs, and spices. Any meat you cook should start at room temperature, so it cooks evenly. The general rule of thumb is to let meat or poultry sit for 30 to 60 minutes. This is the perfect time to let the herbs and spices set into the lamb while you prepare the spit and the open fire.

Charcoal burning
Ben McLeod/Unsplash

Prepare the fire

You should already have a spot lined out for your spit and where you’re going to be roasting the whole lamb. Now you want to make sure you get your coals going, whether you’re using charcoal, wood, or a combination of both. You need to have them ready to go with extra on hand so you can keep the fire going. Once you have the fire rolling, you can finish preparing the lamb by placing the rotisserie skewer through the lamb. You’ll also want to secure the lamb to the skewer so it doesn’t spin on the skewer as it rotates on the spit.

Once the skewer is in place and the lamb is secured, you can now place the lamb on the spit and begin the cooking process.

Juicy basted lamb.
Shutterbug75/Pixabay

Baste the meat

As the lamb is roasting, you should baste it every 15 to 20 minutes, so it doesn’t dry out. The lamb will cook for roughly 4 to 5 hours depending on the size. You can expect a 25- to 30-pound lamb to be medium rare by that time, but it’s best to use a thermometer.

When using the thermometer, place it in the thickest parts of the lamb, which is the shoulder and the legs. When the temperature reaches 10 degrees below your desired temperature, you can remove the lamb from the coals and let it rest.

Lamb is best when the temperature is medium-rare to medium. You don’t want to go above that, because otherwise you risk the lamb meat being dried out and tough. The USDA recommends cooking lamb to a minimum temperature of 145 degrees Fahrenheit. This means you will remove the roasted lamb when the temperature reaches 135 degrees. If you want a medium temperature, then you will remove the lamb once the thermometer reaches 150 degrees Fahrenheit.

Roast lamb shoulder
Michael Paul/Getty Images

Rest, slice, and serve

When cooking meat or poultry, you should always rest them after cooking. Depending on the size of the meat you are cooking. A whole lamb should rest for about 15 minutes before cutting. Resting meat allows the juices to redistribute evenly back into the lamb. This will create a more flavorful and juicy product. You can tent the lamb while it is resting in order to keep heat from escaping during the resting period.

Once the lamb is rested, you can begin carving. Remember when carving meat to always cut against the grain. Cutting against the grain reduces the gamey flavor and breaks up the muscle fiber, making the cut of meat more tender. Serve and enjoy!

Red wine being poured into glass
Vinotecarium / Pixabay

What to have with lamb

Lamb accompanies an entire host of great side dishes and drinkable liquids. Try out this gamey meat with something sweet, like caramelized vegetables (think onion and carrot). Many love mint with lamb, but we are partial to a classic twice-baked potato, as the richness and robustness of the side can stand up to the weight of the lamb. Grilled asparagus is also a great route to take when eating lamb.

What to drink? Try a red with some character, like an earthy pinot noir or a syrah. A good cabernet or merlot can do the trick, too, with the weight of the wine working great with the meaty notes of the lamb. If you feel like trying something a little different, go with a Tuscan red blend. The good people of Florence have been pairing these classic reds with grilled meats for ages, and to excellent effect.

Love lamb? Check out our feature on how to make lamb sausage as well as a 101 on pairing wine and meat. Summer is still hanging on, so get outside a take in some al fresco meals.

Editors' Recommendations

Mark Stock
Mark Stock is a writer from Portland, Oregon. He fell into wine during the Recession and has been fixated on the stuff since…
Here’s how to crawfish boil the right way (and everything else there is to know about crawfish)
Crawfish is a Southern staple and in season right now. Here's how to properly prepare this seafood
A southern Crawfish plate

Crawfish, crayfish, crawdads, freshwater lobsters, mountain lobsters, yabbies, or mudbugs -- whatever you call them, one thing remains the same: They're delicious. That is; when they're prepared correctly. If you live above the Mason-Dixon line, you may not have heard of any of these cousins to the lobster, and that's totally normal. Crawfish are everywhere, but the vast majority of the world's eating crayfish come from Louisiana (around 95%).

The end of March to early June is prime crayfish season (when they grow to be the largest). That's why crawfish boils are common around the middle of spring to early summer. Despite being at their largest around this time, they're still pretty small. A jumbo crayfish will provide about as much meat as an average-sized shrimp. So, after you learn how to eat crawfish, you're going to need to eat a lot -- we suggest around 3 to 5 pounds per person. This seems like a ton, but you have to remember that these little buggers are mostly shell. And the secret of a good crawfish boil is to not overcook them, or the meat becomes tough.

Read more
Pro tips from Chef Eduardo Garcia for cooking outdoors like a true mountain man
Here's how to really cook like a mountain man
Chef Eduardo Garcia.

When we think of mountain men, we tend to think of rugged and self-sufficient folks who live off of the land. And while that's mostly accurate, it's also 2024, and the definition has evolved. Today's mountain man is personified by chef Eduardo Garcia, who combines culinary expertise and the right cooking tools with an adventurous attitude and focus on the environment.

Garcia has put in some shifts. He's done everything from cooking on yachts to delivering motivational speeches. He's also the host of Big Sky Kitchen, now two seasons deep. The show focuses on outdoor cooking and the many joys of preparing and eating food in the context of nature.

Read more
A guide to the five mother sauces of classical cuisine and their uses
Most sauces comes from these foundational sauces, so you must know how to make them
Sauces and spiced spreads in small jars

Did you know that most sauces come from five foundational sauces known as mother sauces? These mother sauces add moistness, flavor, richness, color, and shine, as well as interest and appetite appeal. These sauce-making techniques are some of the basic skills needed in cooking, and they still need to be combined into finished sauces. Finishing techniques have three elements to them: liquid, thickening agent, and seasoning or flavoring ingredients.

The leading sauces are made of liquid plus a thickening agent. The sauces that are derived from the leading sauce are called small sauces. The small sauces are created by using the leading sauce plus additional flavoring ingredients. The best way to remember the name of each mother sauce is by the acronym BETH V: béchamel, espagnole, tomato, hollandaise, and velouté.
Béchamel sauce

Read more