Irish Oxtail Soup Recipe for a Slow, Rich Sunday Supper

Irish oxtail soup is a hearty, slow-braised beef soup made with oxtail, stock, root vegetables, and herbs. The long, gentle simmer turns the meat tender and gives the broth deep flavor; potatoes, peas, and a little vinegar make the finished bowl feel balanced and satisfying. Irish-style versions vary from kitchen to kitchen, so this recipe keeps the method traditional in spirit while using easy-to-find ingredients.

Ingredients

3 1/2 lb (1.6 kg) oxtail pieces, preferably cut into similar sizes
1 1/2 tsp (7 g) kosher salt, plus more to taste
1/2 tsp (1 g) freshly ground black pepper
2 tbsp (30 ml) neutral cooking oil
2 medium yellow onions, chopped, about 2 cups (300 g)
2 celery ribs, chopped, about 1 cup (100 g)
4 medium carrots, about 3 cups (400 g), peeled and sliced; divide 2 for the long simmer and 2 for later
3 garlic cloves (9 g), finely chopped
1 tbsp (16 g) tomato paste
2 tbsp (16 g) all-purpose flour, optional, for a slightly thicker broth
8 cups (1.9 L) low-sodium beef stock
2 cups (475 ml) water
2 bay leaves (about 0.5 g)
4 fresh thyme sprigs (about 4 g), or 1 tsp (1 g) dried thyme
1 tbsp (15 ml) Worcestershire sauce
1 1/2 lb (680 g) waxy potatoes, cut into 1-inch (2.5 cm) chunks
1 cup (150 g) frozen peas
1 tbsp (15 ml) cider vinegar
2 tbsp (8 g) chopped fresh parsley

Instructions

Prepare the ingredients, 35 minutes. Pat the oxtail dry with paper towels; dry surfaces brown more effectively than damp ones. Season all over with the salt and pepper. Chop the onions, celery, garlic, carrots, and potatoes, keeping half of the carrots separate for the later part of cooking. Set out the stock, water, herbs, and remaining ingredients so they are ready to add.
Brown the oxtail, 18 minutes. Heat the oil in a large, heavy Dutch oven or soup pot over medium-high heat. Working in batches so the pieces have room, brown the oxtail on several sides, turning as needed. Allow about 5 to 6 minutes per batch; transfer browned pieces to a plate. Avoid crowding the pot, because the meat will steam rather than brown and the soup will have less roasted flavor. If the bottom becomes very dark, lower the heat slightly.
Build the aromatic base, 8 minutes. Reduce the heat to medium. Add the onions and celery to the pot and cook, stirring and scraping up browned bits, until softened, about 5 minutes. Stir in the garlic and tomato paste and cook for 1 minute. If using flour, sprinkle it over the vegetables and stir for 1 minute to coat them; it will help give the broth a little body. Skip the flour for a thinner soup or if you need a gluten-free version.
Start the braise, 3 hours 30 minutes. Return the oxtail and any plate juices to the pot. Pour in the stock and water, then add the bay leaves, thyme, Worcestershire sauce, and half of the sliced carrots. The liquid should come close to covering the meat; add a little more water if your pot is unusually wide. Bring the liquid just to a boil, then lower the heat until it maintains a gentle simmer. Cover with the lid slightly ajar and cook for 3 hours 30 minutes, turning the pieces once or twice and checking occasionally that the liquid is barely bubbling. Add hot water if the level drops too far. Check the thickest piece of meat with a food thermometer: USDA FSIS lists 145°F (63°C) with a 3-minute rest as the safe minimum for whole cuts of beef. Continue the braise until the meat is very tender and loosens readily from the bones; tenderness, rather than the minimum temperature, is the goal here.
Add the potatoes and remaining carrots, 30 minutes. Stir in the potatoes and the reserved carrots. Cover and maintain a gentle simmer until the potatoes are tender when pierced with a knife and the carrots are soft but not falling apart, about 30 minutes. Keep the simmer low; a hard boil can break up the potatoes and make the broth cloudy.
Finish the soup, 9 minutes. Use tongs to transfer the oxtail to a plate. Remove the bay leaves and thyme stems. When the meat is cool enough to handle, pull it from the bones in large shreds, discarding bones, cartilage, and any tough pieces. Skim excess fat from the surface of the soup with a spoon. Return the meat to the pot, stir in the peas, and simmer for 3 to 4 minutes, just until hot. Stir in the cider vinegar and parsley, taste, and adjust the salt and pepper. If the soup seems too rich, add another teaspoon of vinegar or a small splash of water; if it tastes thin, simmer uncovered for a few minutes.

Tips

Brown in batches. This takes a little patience, but a crowded pot traps steam and prevents the deep browning that gives the broth a fuller flavor. Let the pot heat again between batches if it has cooled significantly.
Keep the braise gentle. A few small bubbles are ideal. If the soup boils vigorously, the meat can tighten and the vegetables may disintegrate before the oxtail is tender. If the pieces are still resistant after the stated simmer, continue cooking in 15-minute increments and check again.
Use a practical stock substitute. If you cannot find low-sodium beef stock, use regular beef stock and reduce the added salt at first. Water can replace up to 2 cups (475 ml) of the stock, though the broth will taste less full; taste and season after the meat has cooked.
Choose a thickener deliberately. Flour makes the soup more stew-like, but it is optional. For a gluten-free bowl, leave it out and mash a few cooked potato pieces into the broth at the end. This thickens gently without changing the flavor much.

Serving Suggestions

Serve the soup piping hot in warmed bowls, making sure each serving has plenty of meat, vegetables, and broth. Crusty bread, soda bread, or a plain dinner roll is useful for soaking up the rich liquid. A simple green salad dressed with a sharp vinaigrette makes a fresh counterpoint, while buttered cabbage or steamed greens can turn the soup into a larger supper.

Oxtail contains bones and small pieces of cartilage, so take care when serving meat pulled from the bones. Check each portion as you shred it, and make sure any remaining meat is in manageable pieces. A little chopped parsley on top adds freshness; extra vinegar or black pepper can be offered at the table for guests who prefer a brighter or more peppery finish.

Variations

Add barley: Pearl barley is a useful option in some hearty versions of oxtail soup. Add 1/2 cup (100 g) rinsed pearl barley with the stock, then check that it is tender before serving; it absorbs liquid, so keep extra hot water nearby. For a gluten-free variation, choose a clearly labeled gluten-free grain such as rice, adding it at a point in the cooking appropriate to its package directions rather than simmering it for the full braise.

Change the roots: Replace up to half the potatoes with 1 medium parsnip (about 180 g) or 1 small turnip (about 200 g), peeled and diced. Parsnip brings a sweet, earthy note; turnip is more peppery. Add either with the potatoes so the pieces cook through without dissolving during the long simmer.

Make it richer or lighter: For a deeper, darker broth, brown the tomato paste until it turns brick red before adding liquid. To make the finished soup less rich, chill it overnight and lift off the firm fat layer before reheating. Some cooks prefer to leave the oxtail on the bone in the bowls; if doing so, remove the bones before serving children or anyone who would find them difficult to manage.

Storage and Reheating

Cool leftovers promptly and refrigerate them within 2 hours of cooking, in shallow covered containers to help them cool evenly. The soup keeps for 3 to 4 days in the refrigerator. The broth may look gelled after chilling because of the natural gelatin released by the bones; it will loosen again as it heats. You can also freeze cooled soup in airtight freezer-safe containers for about 2 to 3 months for best quality. Leave a little room at the top for expansion, and thaw it overnight in the refrigerator before reheating.

Reheat only the portion you plan to serve in a saucepan over medium-low heat, stirring occasionally until it is steaming throughout. Add a splash of water or stock if the broth has thickened. For food safety, leftovers should reach 165°F (74°C), checked with a food thermometer. Avoid repeatedly cooling and reheating the whole pot; divide it into serving portions instead. If reheating in a microwave, cover loosely, stir midway through, and check the temperature in more than one spot.

Frequently Asked Questions

Can I make Irish oxtail soup in a slow cooker?
Yes. Brown the oxtail and soften the aromatics in a skillet first for better flavor, then transfer them to the slow cooker with the stock, water, herbs, and the first portion of carrots. Cook on low until the meat is fork-tender, usually about 8 to 9 hours, but follow your appliance’s guidance because cookers vary. Add potatoes and the remaining carrots near the end, allowing roughly 1 to 1 1/2 hours on high or until tender. Finish with peas, vinegar, and parsley.

Can I make the soup ahead?
Yes, and making it a day ahead is convenient. Refrigerate it promptly after cooking, then remove the solidified fat from the top before reheating if you like. The broth can become thicker as it chills, so warm it gently and thin it with a little water or stock as needed. Reheat leftovers to 165°F (74°C).

Why is my oxtail still tough?
It probably needs more time. Oxtail has connective tissue that softens gradually during a moist, gentle braise, and the exact time depends on the size of the pieces and the steadiness of the simmer. Keep the pot covered and cook in 15-minute increments until a fork slides into the meat easily. A rolling boil will not make it tender faster and may make the meat less pleasant.

Should I skim the fat before or after cooking?
Skim large pools of fat during cooking if they are easy to reach, then do a more complete skim at the end. For the easiest cleanup, chill the soup and lift away the firm fat layer before reheating. Oxtail naturally releases fat, so the amount varies from one batch to another; removing some is a matter of preference, not a sign that anything went wrong.

What can I use instead of oxtail?
Beef short ribs or bone-in beef shank can make a satisfying braised soup, though neither has exactly the same balance of meat, bone, and gelatin as oxtail. Use a similar total weight and simmer until the meat is tender, checking the pieces as they may cook at a different rate. Boneless stew beef is another option, but the broth will be less silky; adding a little extra stock and allowing enough time for tenderness helps.

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Safety notes: safe minimum internal temperatures from USDA FSIS; raw and undercooked fish guidance from the U.S. FDA. Food safety notes

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