Traditional British Soup: A Hearty Scotch Broth Recipe

Scotch broth is a traditional Scottish soup, often served across Britain, made with lamb, pearl barley and vegetables such as carrots, turnip and cabbage. It simmers into a nourishing, full-bodied bowl with tender meat and a naturally thickened broth; recipes vary by household, so the vegetables can be adjusted to suit what is available.

Ingredients

1½ lb (680 g) boneless lamb shoulder, cut into roughly 1¼-inch (3 cm) pieces
1 tbsp (15 ml) neutral oil, such as rapeseed or canola oil
1 large yellow onion, about 7 oz (200 g), finely chopped
2 medium carrots, about 7 oz (200 g), peeled and diced
1 small leek, about 5 oz (140 g), white and pale-green parts rinsed well and sliced
1 small turnip or rutabaga (swede), about 8 oz (225 g), peeled and diced
2 celery ribs, about 3 oz (85 g), diced
2 garlic cloves, about 6 g, finely chopped
¾ cup (150 g) pearl barley, rinsed in a sieve
8 cups (1.9 L) low-sodium lamb or beef stock
2 bay leaves
1 tsp (2 g) dried thyme, or 1 tbsp (3 g) fresh thyme leaves
1 tsp (6 g) fine salt, plus more to taste
½ tsp (1 g) freshly ground black pepper, plus more to taste
2 cups (140 g) finely shredded savoy cabbage or green cabbage
¼ cup (15 g) chopped fresh parsley, for finishing

Instructions

Prepare the ingredients. Trim excess hard fat from the lamb, but leave a little marbling for flavor. Cut the vegetables into small, similar-sized pieces so they soften at a similar rate. Rinse the pearl barley under cold water until the water runs mostly clear; there is no need to soak it. Keep the cabbage and parsley aside for later.
Brown the lamb. Heat the oil in a large, heavy soup pot or Dutch oven over medium-high heat. Pat the lamb dry, then brown it in two batches for about 4 minutes per batch, turning the pieces so several sides color. Avoid crowding the pot: meat packed tightly together releases moisture and steams rather than browns. Transfer the lamb to a plate. If the pot has a lot of rendered fat, spoon off all but about 1 tablespoon.
Soften the aromatics. Reduce the heat to medium. Add the onion, carrots, leek, turnip, celery and salt. Cook for 5 minutes, stirring and scraping up the browned bits, until the onion begins to soften. Stir in the garlic for the final 30 seconds; it should smell fragrant but not take on much color.
Start the broth. Return the lamb and any juices on the plate to the pot. Pour in the stock, add the bay leaves and thyme, and bring the liquid just to a boil, which should take about 2 minutes. Lower the heat to maintain a gentle simmer, partly cover the pot, and cook for 80 minutes. A calm simmer keeps the broth clearer and helps the lamb become tender; if it boils hard, turn the heat down.
Check and prepare the lamb. Check the center of the largest lamb piece with a food thermometer. USDA FSIS lists 145°F (63°C) with a 3-minute rest as the safe minimum for whole cuts of lamb. Lift the pieces out with a slotted spoon and let them rest for 3 minutes before pulling or cutting them into bite-size pieces. If a piece has not reached 145°F (63°C), return it to the simmer and check again. The meat will continue cooking later, but it should be safe before it is shredded.
Cook the barley and vegetables. Stir the rinsed barley into the pot and simmer, partly covered, for 20 minutes. Return the lamb to the pot, then continue simmering for another 20 minutes, or until the barley is tender but still pleasantly chewy and the root vegetables are soft. Stir once or twice, particularly near the bottom of the pot, because barley can settle and catch. If the soup becomes thicker than you like, add hot water or stock a little at a time.
Finish and season. Stir in the shredded cabbage and simmer for 7 minutes, until tender but still green. Remove the bay leaves. Taste the broth and adjust the salt and pepper; stock varies in saltiness, so make the final adjustment now. Ladle into warm bowls and scatter parsley over each serving. The broth thickens as it stands, so loosen leftovers or a pot held for serving with a splash of hot stock.

Tips

Choose a slow-cooking cut. Boneless lamb shoulder gives the soup a rich flavor and becomes tender during the long simmer. Lamb neck or shoulder chops also work, but they may contain bones; remove them carefully before serving. Mutton is a traditional, stronger-tasting alternative and may need extra simmering to become tender.
Use the right barley. Pearl barley is widely available and gives Scotch broth its characteristic soft, substantial texture. Hulled barley is less processed and takes longer to cook, so follow its package timing and add more liquid as needed. Quick-cooking barley is not a direct swap because it can turn mushy during the long simmer.
Keep the heat gentle. A rolling boil can make lamb fibers tighten and vegetables break apart before the barley is ready. Look for occasional small bubbles, and check the pot more often toward the end so the barley does not stick.
Season at the end, too. Stock and lamb both contribute salt, and the broth reduces slightly as it cooks. Start with the measured amount, then taste after the barley and vegetables are tender. If the soup tastes flat, a little extra black pepper and salt may help; avoid adding a large amount of salt early.

Serving Suggestions

Serve Scotch broth hot in deep bowls, with parsley added just before eating. A slice of crusty bread, oatcakes or a simple roll is useful for scooping up the thick broth. If serving it as a first course, offer smaller portions and follow with a main dish; as a meal on its own, a generous bowl is usually filling because the barley, lamb and vegetables are all in the soup.

For a more complete table, pair the soup with bread and a crisp green salad dressed lightly with vinegar. Keep accompaniments simple so they do not compete with the savory stock. If the soup is being served buffet-style, keep it hot and stir it occasionally: barley settles as the pot stands, and the broth at the bottom can be thicker than the broth at the top.

Variations

Use different root vegetables: Parsnip can replace some or all of the carrot, while diced potato makes the soup softer and more filling. Swede, also called rutabaga, is a traditional choice in Britain; if it is difficult to find, use turnip. Turnip is generally sharper and less sweet, so the finished soup will have a slightly different flavor.

Make a meat-free version: Omit the lamb and use vegetable stock. Brown 12 oz (340 g) chopped mushrooms in the oil before softening the onion and vegetables, then add the barley and stock. Simmer until the barley is tender, adding stock or water as needed. The result is savory and hearty, though it will not have the same lamb-rich broth as the traditional meat version. For extra substance, stir in 1½ cups (250 g) drained cooked white beans during the final 10 minutes.

Change the greens: Savoy cabbage is tender and mild, but ordinary green cabbage works well. Finely sliced kale can be used instead; simmer it for about 8 to 10 minutes, until tender. Add delicate greens near the end rather than at the beginning so they keep their color and do not become overcooked.

Make the broth lighter or thicker: For a thinner soup, use an extra 1 cup (240 ml) stock or hot water and adjust the seasoning. For a thicker bowl, simmer uncovered for the final few minutes, stirring often. Pearl barley continues to absorb liquid as it cools, so a soup that seems just right in the pot may be much thicker the next day.

Storage and Reheating

Cool the soup promptly and refrigerate it within 2 hours of cooking. Store it in a covered container in the refrigerator for 3 to 4 days. The barley absorbs broth during storage, so expect a thicker texture; stir in water or stock when reheating rather than thinning the whole batch if you are warming only one portion.

Reheat on the stovetop over medium-low heat, stirring regularly, until steaming throughout. For food safety, leftovers should reach 165°F (74°C); check the temperature in a few places with a food thermometer. In a microwave, cover the bowl loosely, heat in short intervals, and stir between intervals so the center heats evenly. Refrigerate any soup not being served again within 2 hours.

To freeze, cool the soup and portion it into freezer-safe containers, leaving a little room for expansion. Freeze for up to 3 months for best quality. Thaw overnight in the refrigerator, then reheat to 165°F (74°C). The barley may be softer after freezing and thawing; add a little stock as it warms to bring the broth back to a spoonable consistency.

Frequently Asked Questions

What makes Scotch broth different from other British soups?
Scotch broth is defined by the combination of meat, barley and vegetables in a substantial stock. Recipes vary, but lamb or mutton, pearl barley and root vegetables are common. Cabbage or another green is often added near the end. It is usually served as a chunky soup rather than blended smooth.

Can I make Scotch broth without lamb?
Yes. The meat-free variation above uses mushrooms and vegetable stock for a savory alternative. You can also leave out the meat and increase the vegetables, but the broth will be lighter. Use a good vegetable stock and taste carefully for seasoning because it will not have the depth contributed by lamb.

Do I have to soak pearl barley first?
No. Rinsing pearl barley is enough for this recipe. Soaking can shorten the cooking time, but it is not needed, and a presoaked grain may become tender sooner than the vegetables. If you choose to soak it, reduce the simmering time and check the texture early.

Can I make the soup ahead?
Yes. The flavor holds well overnight, although the barley will absorb more liquid and soften slightly. Cool and refrigerate the soup within 2 hours, then reheat it thoroughly the next day. Keep extra stock or water ready to loosen it as it warms, and add fresh parsley just before serving.

What can I use instead of swede?
Use turnip if available; it is a practical substitute, though it tastes sharper and less sweet than swede. Diced parsnip or a modest amount of potato also works, with a change in flavor and texture. Cut the substitute into similar-sized pieces so it cooks at roughly the same rate as the carrots.

Why has my soup become very thick?
Pearl barley continues to take up liquid as the soup cools, so thickening is normal, especially after refrigeration. Stir in hot stock or water a little at a time while reheating until the consistency suits you. Taste again after adding liquid, since you may need to adjust the seasoning.

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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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