Greek Christmas Lamb Roast with Lemon, Garlic and Potatoes
Why this recipe works
- Layered lemon and herb flavour: Garlic is worked into the lamb as both a surface rub and slivers inside the meat, while lemon, oregano and rosemary season the roast from different angles.
- Potatoes cook in the roasting juices: Adding the potatoes partway through lets them absorb the wine, lemon and lamb juices without overcooking before the meat is ready.
- Browning first, then gentle roasting: A hot start helps develop colour on the outside before the lower oven temperature gives the lamb time to become tender and evenly cooked.
Get the most out of this recipe
Timing notes
- Mostly hands-off roasting: The active work is brief; most of the time is oven cooking, with the potatoes added after the lamb has already started to roast.
- Rest before carving: Let the lamb rest for 15 to 20 minutes so the juices settle and the meat carves more cleanly.
- Finish the pan juices last: Squeeze the roasted lemon into the pan juices just before serving to keep the sauce bright and aromatic.
Ingredient notes
- Bone-in lamb adds depth: A bone-in leg gives the roast a classic centrepiece feel and helps enrich the pan juices as it cooks.
- Dried oregano works well here: Dried oregano has a concentrated, savoury aroma that stands up to the long roasting time and pairs naturally with lemon and lamb.
- Use the lemon to balance richness: The roasted lemon softens in the pan, adding acidity that cuts through the lamb’s richness without making the juices sharp.
Common mistakes
- Do not keep the oven high throughout: The initial hot roast is for browning; reducing the temperature afterwards prevents the garlic, lemon and pan juices from catching before the lamb is cooked.
- Give the potatoes space: If the pan is overcrowded, the potatoes steam rather than roast and the lamb surface browns less effectively.
- Check the thickest part: Use a thermometer away from the bone, as the bone can give a misleading reading and the thickest section takes longest to cook.
Make-ahead tips
- Prepare the aromatics ahead: The garlic, lemon and herb mixture can be prepared in advance and kept covered in the fridge until you are ready to season the lamb.
- Reheat gently with juices: Reheat leftover lamb and potatoes in a 180°C (355°F) oven with a little pan juice until piping hot.
- Freeze lamb with moisture: Carved lamb freezes best with some of the pan juices to help protect it from drying out; potatoes are better eaten from the fridge.
Equipment you'll need
Ingredients
Instructions
- Heat the oven to 220°C (430°F). Pat the lamb dry, then season all over with the fine sea salt and black pepper.
- Crush 4 garlic cloves and put them in a bowl with the juice of 1 lemon, the dried oregano, the leaves from 1 rosemary sprig and the extra virgin olive oil. Rub this mixture all over the lamb, working it into any natural seams.
- Cut the remaining 2 garlic cloves into slivers. Use the tip of a knife to make small incisions all over the lamb and push the garlic slivers into the cuts.
- Halve the remaining lemon and place it in the roasting pan with the remaining rosemary sprig. Set the lamb on top and pour the dry white wine into the pan around the lamb.
- Roast for 20 minutes to start browning the surface. Reduce the oven to 170°C (340°F) and roast for a further 60 minutes, basting once with the pan juices.
- Meanwhile, scrub the new potatoes and cut any larger ones in half so they cook evenly. After the lamb has had 80 minutes total roasting time, carefully add the potatoes to the pan and turn them in the juices.
- Continue roasting for 45 to 55 minutes, turning the potatoes once, until the potatoes are tender and the lamb is deeply browned. For medium lamb, aim for 60°C (140°F) in the thickest part away from the bone, then rest; for well done, cook to 70°C (160°F).
- Transfer the lamb to a board, loosely cover, and rest for 15 to 20 minutes. Spoon off excess surface fat from the pan if you like, then squeeze the roasted lemon halves into the pan juices and stir to combine.
- Carve the lamb and serve with the potatoes. Spoon plenty of the lemony, herby pan juices over everything.
Recipe notes
Tips
- For the best crust, keep the lamb surface as dry as possible before seasoning, and avoid overcrowding the roasting pan so the heat can circulate.
- If the pan looks dry at any point, add a small splash of dry white wine to keep the juices from catching.
- If serving pregnant people, young children, or anyone immunocompromised, cook the lamb to well done (70°C/160°F) and ensure it is piping hot throughout.
Substitutions
- Replace Fresh rosemary with Fresh thyme for a softer, more floral herb note.
- Replace Dry White Wine with Dry red wine for a deeper, richer pan juice.
Storage
- Refrigerate up to 3 days
- Cool leftovers quickly, then refrigerate in a sealed container. Reheat lamb and potatoes in a 180°C (355°F) oven with a spoonful of pan juices until piping hot; freeze carved lamb with a little juice for best moisture.
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Recipe overview
- Servings: 4 servings
- Total time: 2h 50min (25min active)
- Difficulty: Medium
- Cuisine: Greek
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