These lamb shanks are the ultimate make-ahead dinner party centerpiece. A long, slow braise in Guinness, stock, and a touch of Irish whiskey transforms the meat into something deeply savory and fall-off-the-bone tender, all wrapped in a rich, glossy sauce. This dish is best made the day before; the flavors deepen overnight and reheating is straightforward, leaving the evening itself almost entirely free.
This recipe is one of three components in a St. Patrick's Day menu developed on The Aided Chef. The full menu, along with the thinking behind it, is in The Braise Was Fine. I Was the Problem. The other recipes are Champ and Honey-Roasted Carrots and Leeks with Thyme.
Serves 4 | Intermediate | Can - and should - be made the day before
4 lamb shanks (roughly 1 lb each)
Salt and freshly ground black pepper
2 tablespoons neutral oil (such as vegetable or canola)
1 medium yellow onion, roughly chopped
2 medium carrots, roughly chopped
3 cloves garlic, smashed
2 tablespoons Irish whiskey (such as Jameson)
1 can (14.9 oz) Guinness Draught (not Extra Stout)
2.5 cups lamb or beef stock, plus ¼ cup for reheating
2 tablespoons tomato paste
4 sprigs fresh thyme
2 bay leaves
1 tablespoon cold unsalted butter, cut into small cubes
The night before
Preheat your oven to 325 degrees F. Pat the lamb shanks completely dry with paper towels and season generously on all sides with salt and pepper. Drying the surface is important, as moisture on the meat will prevent a proper sear.
Heat the oil in a large Dutch oven or heavy oven-safe pot over medium-high heat. When shimmering, sear the shanks in batches and do not crowd the pan. Turn every 2 to 3 minutes until deeply browned on all sides, about 10 minutes total per batch. This browning builds the foundation of flavor for the entire dish. Remove the shanks and set aside on a plate.
Reduce heat to medium. Add the onion and carrots to the same pot and cook, stirring occasionally, for 4 to 5 minutes until softened and beginning to color. Add the garlic and cook for another minute.
Add the whiskey and stir, scraping up any browned bits stuck to the bottom of the pot. These bits are pure flavor. Let the whiskey cook for about 30 seconds.
Stir in the tomato paste and cook for 1 to 2 minutes until it darkens slightly. Pour in the Guinness and stock. Add the thyme sprigs and bay leaves. Bring the liquid to a simmer.
Nestle the lamb shanks back into the pot. The liquid should come about two-thirds of the way up the shanks; this is normal. The shanks do not need to be fully submerged. Cover tightly with a lid and transfer to the oven.
Braise for 3 to 3.5 hours, turning the shanks once at the halfway point. The shanks are done when the meat is completely tender and has pulled visibly away from the bone. If you meet any resistance when you press the meat gently with a spoon, give it another 20 to 30 minutes.
Cooling and storing (do this the same night)
Using tongs, carefully lift each shank out of the braising liquid and place them in a baking dish or container large enough to hold all three in a single layer. They will be very tender and may begin to fall apart slightly—that is a good sign. Let them cool at room temperature for about 30 minutes, then cover and refrigerate.
While the shanks cool, strain the braising liquid through a fine mesh strainer into a medium saucepan, pressing firmly on the vegetables to extract all of their liquid. Discard the solids. You should have roughly 2 to 3 cups of liquid.
Bring the strained liquid to a boil over medium-high heat. Reduce until it coats the back of a spoon and has a sauce-like consistency, about 10 to 15 minutes. Taste and adjust salt. Pour the reduced sauce into a separate container, let it cool, then refrigerate. Do not store the shanks in the sauce overnight; keeping them separate gives you better control when reheating.
The next morning, you will notice the sauce has set into a firm, almost gelatinous solid. This is exactly what you want—it is the collagen released from the lamb bones during the long braise, and it is what gives the finished sauce its extraordinary body and richness. Simply scrape off and discard the solidified fat layer on top, then reheat as directed below.
About 2 hours before eating
Remove the shanks and sauce from the refrigerator about 2 hours before you plan to eat—this gives them time to lose their fridge chill before going into the oven, which helps them reheat evenly.
Preheat your oven to 300 degrees F. Place the shanks in a single layer in a baking dish. Pour about 1/4 cup of stock into the bottom of the dish, just enough to create a thin layer of liquid. This will turn to steam as the oven heats up, keeping the environment inside the dish moist so the meat warms through gently without drying out. Cover the dish tightly with aluminum foil.
Reheat in the oven for 30 to 40 minutes, until the shanks are warmed all the way through. To check, press gently on the thickest part of the meat—it should feel hot to the touch and give easily under slight pressure.
While the shanks reheat, pour the sauce into a small saucepan and warm over low heat, stirring occasionally. If it has thickened too much, add a small splash of beef or lamb stock to loosen it to a pourable, coating consistency. Once warm, remove from heat and whisk in 1 tablespoon of cold butter cut into small cubes. Add the butter gradually, whisking steadily until fully incorporated and the sauce looks glossy. This final step adds richness and gives the sauce a restaurant-quality finish. Taste one last time and adjust seasoning.
If you are making this as part of a larger meal with one oven:
The lamb is the most forgiving element on the table and should always go first. Once the shanks are warmed through and resting under foil, they will hold comfortably for up to an hour, giving you a clear window to crank the oven and finish any other dishes.
Did the sauce set solid overnight? I would genuinely like to know what stage felt most uncertain to you, and whether the finished dish surprised you.
