Roast Leg of Lamb With Flageolet Beans: A Parisian Classic

The aroma always takes me back. It’s a chilly autumn evening in Paris, the golden light spilling onto the cobblestones outside Brasserie Balzar. Inside, the air is thick with the comforting scent of roasting lamb, mingled with earthy beans and a whisper of garlic. That first bite – the tender, pink lamb, the creamy flageolets, the bright pop of green beans – was a revelation. It wasn’t just dinner; it was an experience, a taste of Parisian culinary tradition I’ve tried to recreate ever since.

Recipe Overview

• Prep Time: 12 hours 25 minutes (includes bean soaking)
• Cook Time: 3 hours
• Total Time: 15 hours 25 minutes
• Servings: 6
• Yield: 6 servings
• Dietary Type: Gluten-Free

Ingredients

For the Beans:

• 1 lb flageolet beans
• 1 bouquet garni (thyme, parsley, bay leaf)
• 1 carrot, peeled and sliced
• 1 onion, poked with 4 cloves
• 3 quarts cold water
• 2 quarts salt water
• 1 lb fresh green beans, washed and trimmed

For the Lamb:

• 4 lbs leg of lamb
• 2 garlic cloves, cut in slivers
• Salt and freshly ground black pepper
• 1 onion, sliced
• 3 carrots, peeled and sliced
• 1 cup dry white wine
• 2 cups water
• 1 tablespoon unsalted butter

Equipment Needed

• Large pot
• Roasting pan
• Fine sieve
• Skillet

Instructions

1. Begin by preparing the flageolet beans. Rinse, pick over, and soak them in cold water overnight (approximately 12 hours). This step is crucial for softening the beans and reducing their cooking time.
2. The next day, drain the soaked beans and place them in a large pot. Add the bouquet garni, sliced carrot, and clove-studded onion.
3. Cover the beans with the 3 quarts of cold water. Bring the mixture to a boil, then reduce the heat to low. Simmer for 2 to 2 ½ hours, or until the beans are thoroughly cooked and tender. Check periodically and add more water if necessary to keep the beans submerged.
4. While the beans are simmering, prepare the green beans. Bring the 2 quarts of salted water to a boil in a separate pot. Add the green beans and cook for about 12 minutes, or until they are crisp-tender. They should still have a slight bite.
5. Drain the green beans immediately and refresh them under cold running water to stop the cooking process and preserve their vibrant green color. Set aside.
6. Preheat your oven to 450°F (232°C).
7. Prepare the leg of lamb. Using the tip of a knife, poke the lamb in various spots, creating small slits. Insert the slivers of garlic into these slits, distributing them evenly across the surface of the lamb. Season the entire leg generously with salt and freshly ground black pepper.
8. In the bottom of a roasting pan, create a bed of the sliced onion and carrots. This will elevate the lamb slightly and prevent it from sticking to the pan, while also adding flavor to the drippings.
9. Place the leg of lamb on top of the vegetables in the roasting pan. Place the roasting pan in the preheated oven.
10. Immediately reduce the oven temperature to 350°F (177°C). Roast the lamb for approximately 1 hour and 20 minutes for a rare roast, aiming for an internal temperature of 165°F (74°C). For a well-done roast, continue cooking for up to 2 hours, until the internal temperature reaches 175° to 180°F (79° to 82°C). Use a meat thermometer to ensure accurate doneness.
11. Once the lamb has reached the desired internal temperature, remove it from the oven and transfer it to a platter. Allow the lamb to rest for at least 15-20 minutes before carving. This allows the juices to redistribute, resulting in a more tender and flavorful roast.
12. While the lamb is resting, prepare the sauce. Place the roasting pan on the stovetop over medium heat. Add the dry white wine and water to the pan. Mix well, using a spatula to scrape up all the caramelized juices from the bottom of the pan. This process, known as deglazing, releases flavorful fond into the liquid.
13. Strain the sauce through a fine sieve to remove the vegetables and any solids. Season the strained sauce to taste with salt and pepper.
14. Reheat the flageolet beans. If they have cooled down too much, gently reheat them in a saucepan over low heat. Season with salt and pepper.
15. In a skillet, reheat the green beans with the unsalted butter. Cook for a few minutes until heated through. Season with salt and pepper.
16. To serve, carve the lamb into thin slices. Place the slices on a large platter on a bed of the reheated flageolet beans. Surround the lamb and beans with the green beans. Douse the meat generously with some of the sauce. Serve the remaining sauce on the side.

Expert Tips & Tricks

• For an even more intense flavor, consider marinating the leg of lamb overnight. A simple marinade of olive oil, garlic, herbs, and lemon juice works wonders.
• If you can’t find flageolet beans, cannellini or great northern beans make excellent substitutes.
• Don’t discard the cooking liquid from the beans! It’s incredibly flavorful and can be used as a base for soups or stews.
• To ensure even cooking of the lamb, use an oven thermometer to verify the accuracy of your oven temperature.
• If the lamb begins to brown too quickly during roasting, tent it loosely with foil.

Serving & Storage Suggestions

Serve the roast leg of lamb immediately for the best flavor and texture. Garnish with fresh herbs, such as parsley or rosemary, for an elegant presentation.

Leftover lamb can be stored in an airtight container in the refrigerator for up to 3 days. The flageolet beans and green beans can also be stored separately in the refrigerator for the same duration.

To reheat, slice the lamb thinly and gently warm it in a skillet with a little of the sauce. Reheat the beans and green beans separately in a saucepan or microwave.

Nutritional Information

Nutrient	Amount per Serving	% Daily Value
Calories	966 kcal	N/A
Calories from Fat	392 g	41%
Total Fat	43.6 g	67%
Saturated Fat	18.9 g	94%
Cholesterol	207.7 mg	69%
Sodium	237.7 mg	9%
Total Carbohydrate	59.8 g	19%
Dietary Fiber	23.1 g	92%
Sugars	6.5 g	26%
Protein	76.2 g	152%

Variations & Substitutions

• Herb Variations: Experiment with different herbs in the bouquet garni, such as rosemary, sage, or thyme.
• Wine Substitution: If you don’t have dry white wine, you can substitute chicken broth or vegetable broth in the sauce.
• Bean Variations: As mentioned, cannellini or great northern beans can be used in place of flageolet beans. Consider adding other legumes like lima beans for a different flavor profile.
• Vegetable Additions: Roast other vegetables alongside the lamb, such as potatoes, parsnips, or Brussels sprouts.

FAQs (Frequently Asked Questions)

Q: Can I make this recipe ahead of time?

A: Yes, you can prepare the flageolet beans and green beans ahead of time and reheat them before serving. The lamb is best served immediately after roasting, but you can roast it a few hours in advance and keep it warm in a low oven.

Q: How do I know when the lamb is cooked to the correct temperature?

A: Use a meat thermometer to check the internal temperature of the lamb. Insert the thermometer into the thickest part of the leg, avoiding the bone. For rare, aim for 165°F (74°C); for well-done, aim for 175° to 180°F (79° to 82°C).

Q: What if I don’t have a bouquet garni?

A: You can easily make your own bouquet garni by tying together fresh thyme, parsley, and bay leaf with kitchen twine.

Q: Can I use dried green beans instead of fresh?

A: While fresh green beans are recommended for the best flavor and texture, you can use frozen green beans as a substitute.

Q: How can I make the sauce richer?

A: For a richer sauce, add a tablespoon of butter to the pan drippings before deglazing with wine and water. You can also add a splash of cream at the end for extra richness.

Final Thoughts

This Roast Leg of Lamb with Flageolet Beans is more than just a recipe; it’s a journey. It’s a journey to the heart of French cuisine, a chance to recreate a classic dish that’s both comforting and elegant. Don’t be intimidated by the length of the recipe; each step is simple and rewarding. Gather your ingredients, embrace the process, and prepare to be transported to a cozy Parisian brasserie with every delicious bite. Share your experience with friends and family, and don’t hesitate to put your own spin on this timeless classic. Bon appétit!