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Overview

Icelandic Lamb Soup

Kjötsúpa, Icelandic Meat Soup

This icelandic lamb soup recipe simmers bone-in lamb shoulder in a clear broth with potato, carrot, rutabaga, cabbage and pearl barley until the meat falls tender. One serving is about 600 g, a big brothy bowl served with rye bread.

Kjötsúpa, literally “meat soup”, is one of Iceland’s oldest dishes, cooked since the first settlers arrived with sheep in the 9th century. Lamb, root vegetables that store through the winter, and a handful of barley went into one pot and simmered over the hearth — a plain, nourishing meal that asked for nothing more than salt and pepper. It is still the soup Icelanders make when the weather turns, and it is served at festivals and family gatherings across the country.

Pairs well with: Rye bread, flatbread & butter

Provenance

Iceland flag Iceland

Icelandic Heritage

Nordic & European

Time Dedication

2h 15m

25m prep • 110m cook

Batch Yield

6 Servings

475 kcal per serving

1 serving ≈ 600 g

Technical Skill

Intermediate

Easy (One Pot, Slow Simmer)

Meal Timing & Digestive Fit

Breakfast

Not Advised

Lunch

Hearty Midday Main

Dinner

Ideal Hearty Main

Snack & Tea

Inappropriate

Soups & BrothsHigh Protein Occasions: Family dinners, cold-weather suppers, festival tables, winter gatherings Cost: Low — about $3–4 per serving at home
Tags: Lamb Vegetables Savory High-protein Soup
A white cup of Icelandic lamb soup with pieces of carrot and potato in a golden broth, with a white spoon, on a wooden table

Icelandic Heritage

Photo: Ypsilon from Finland, CC0, via Wikimedia Commons

The Heritage Formulary

Measured Ingredients

Estimated cost: Low — about $3–4 per serving at home (USD)

Cooked the traditional way: a clear broth, skimmed clean, with roots and barley added in turn and cabbage last.

Execution Methodology & Culinary Technique

Step-by-Step Cooking Guide

Active 2h 15m
P

Prep Stage: Cut the Lamb & Roots

25 Mins • Chopping

Cut the lamb into large chunks and season lightly. Peel and chop the potatoes, carrots and rutabaga, shred the cabbage, and rinse the barley. Put the lamb in a large pot with the cold water and bring it slowly to the boil, skimming off the grey foam that rises — this is what keeps the broth clear and golden.

Maestro Tip: Skim patiently in the first 15 minutes: every spoonful of foam you lift off is cloudiness that never reaches the bowl.

  1. 1

    Simmer the Lamb

    60 Mins Gentle simmer, ~95°C (203°F)

    Put the lamb chunks in a large pot with 2 litres of cold water and the onion. Bring slowly to the boil, skimming the foam as it rises, then turn down to the barest simmer, cover with the lid ajar, and cook for 60 minutes until the lamb is nearly tender.

    A rolling boil makes the broth cloudy and the meat tough; the surface should barely tremble.

    Done when: Lamb yields easily to a fork and the broth is clear and golden.

  2. 2

    Add the Roots & Barley

    40 Mins Gentle simmer, ~95°C (203°F)

    Stir in the potatoes, carrots, rutabaga and rinsed barley. Keep at a gentle simmer for 35 to 40 minutes until the roots are tender and the barley is soft and swollen.

    Barley goes in with the roots, not at the start — added too early it turns to mush and clouds the broth.

    Done when: Roots are tender through and the barley grains are soft.

  3. 3

    Finish with Cabbage

    10 Mins Gentle simmer, ~95°C (203°F)

    Stir in the shredded cabbage and simmer for 8 to 10 minutes more, just until it wilts into the broth but still has a little bite. Season with salt and pepper, tasting as you go — the broth should taste clean and lamb-rich, not salty.

    Cabbage goes in last so it stays bright and slightly crisp instead of grey and tired.

    Done when: Cabbage is wilted but still green; the lamb is fall-apart tender and reads at least 74°C (165°F) in the centre.

  4. 4

    Rest, Taste & Serve

    5 Mins Serve hot, ~75°C (167°F)

    Take the pot off the heat and rest for 5 minutes so the flavours settle. Taste once more and adjust the salt — the broth should taste clean and lamb-rich. Ladle into deep bowls, making sure each serving gets lamb, roots and a good share of broth.

    A short rest lets the barley finish swelling and the broth clear again after stirring.

    Done when: Clear golden broth, tender lamb and roots in every bowl.

Finishing Touches & Plating

Ladle into deep bowls, making sure each serving gets lamb, roots and a good share of broth, and serve at once with thick slices of rye bread for soaking up the soup.

Nutritional Physiology & Benefits

Nutrition

Energy

475

kcal / serving

Protein

27g

Complete AA

Carbs

37g

Complex

Fats

25g

Healthy

Per serving (6 servings · 1 serving ≈ 600 g)
Energy475 kcal
Protein27 g
Carbohydrates37 g
Fat25 g
Fibre7.3 g
Sugar6.7 g
Sodium658 mg
Per 100g
Energy79 kcal
Protein4.5 g
Carbohydrates6.2 g
Fat4.2 g
Fibre1.2 g
Sugar1.1 g
Sodium110 mg

Nutrition values are estimated — calculated from USDA FoodData Central values for the listed ingredients.

Vitamins & minerals: Lamb supplies vitamin B12, iron and zinc, carrots and rutabaga add vitamin A and vitamin C, and cabbage adds vitamin K and folate. All nutrition values are estimated.

Steady, Gentle Energy

One serving gives about 37.0 g of carbohydrate from potato, roots and barley — slow, steady fuel for a cold day.

Iron, Zinc & B12

Lamb is a rich source of iron, zinc and vitamin B12, nutrients that support normal blood formation and immune function.

Fibre from Roots & Barley

About 7.3 g of fibre per serving comes from the root vegetables, cabbage and barley, which supports normal digestion.

Food Pairings

What to Eat With

To optimize nutrient absorption and elevate the sensory depth, pair with these authentic accompaniments:

Sides

Dark Rye Bread

Thick slices of rúgbrauð are made for this soup — they soak up the golden broth and turn a bowl of soup into a full meal.

Flatbread & Butter

Crisp flatbrauð spread with butter is the traditional second bread on the table, adding crunch next to the soft, brothy soup.

Vegetables

Pickled Cucumber

Cold, sharp pickled cucumber refreshes the palate between spoonfuls of rich lamb broth.

Drinks

Hot Black Tea

Hot tea warms you through after a brothy soup and suits the plain, old-fashioned character of the meal.

Full Menus

Skyr with Berries

A small bowl of skyr with berries after the soup adds a cool, tangy finish without weighing the meal down.

Complete menu

Start with pickled cucumber, serve the lamb soup hot in deep bowls with dark rye bread and butter, and finish with skyr and berries.

Digestive Guardrails

What NOT to Combine

To prevent digestive distress, sluggishness, or palate clash, avoid pairing the dish with these elements:

Heavy Cream or Cheese

Kjötsúpa is a clear, brothy soup by tradition — stirring in cream or cheese would turn it into a different, much heavier dish and add a lot of saturated fat. This is general food information, not medical advice.

Very Salty Sides

The soup already carries about 658 mg sodium per serving, so pairing it with cured meats or very salty bread can push one meal far above a comfortable sodium level. This is general food information, not medical advice.

General information only, not medical advice — consult a doctor for personal dietary decisions.

Who Should Eat It

Who Should Eat

  • General adultsA nourishing, balanced dinner — about 27.1 g protein and 475 kcal per serving in a big 600 g bowl.
  • ChildrenChildren usually enjoy the mild broth and soft roots; cut the lamb into small pieces and let the soup cool a little before serving.
  • ElderlySoft, easy to chew and easy to digest once the lamb is tender, but serve a modest bowl and keep the bread light.
  • Pregnant womenFine as an occasional dinner; lamb is a good source of iron, but make sure it is cooked right through to 74°C (165°F) in the centre.
  • Breastfeeding womenA warming, iron-rich dinner; the lamb, roots and barley supply protein and steady energy, but one bowl is enough.
  • AthletesGood post-training food for the protein and the carbohydrate from potato and barley — pair with rye bread rather than extra butter.
  • Weight gainEasy to eat in large amounts with bread, so it suits weight gain when served with rye bread and butter.
  • Weight lossFilling and brothy at 475 kcal a serving; keep to one bowl, go easy on the bread, and let the vegetables do the filling.

Health Conditions — Adjust or Avoid

Conditions

  • DiabetesPotato and barley are starchy, so keep the serving to the stated 600 g and skip second helpings of bread. Ask your clinician about portions.
  • High blood pressureOne serving carries about 658 mg sodium, so keep other salty foods out of the same meal and do not add extra salt at the table. Ask your clinician about portions.
  • Kidney diseasePotato is high in potassium, which matters for some kidney diets; portions should stay modest. Ask your clinician about portions.
  • GoutLamb is higher in purines than poultry or fish, so the meat content is the main thing to watch; keep to one modest bowl. Ask your clinician about portions.
  • Stomach issuesA plain, brothy soup is usually gentle, but eat slowly and skip the raw onion garnish if it bothers you. Ask your clinician about portions.
  • Cardiovascular diseaseThe lamb fat adds saturated fat, so one modest bowl with a big plate of vegetables is a better balance than a second helping. Ask your clinician about portions.
  • Fatty liverThe soup is moderately rich, so keep portions modest and avoid eating it late at night. Ask your clinician about portions.
  • Food allergiesContains barley (gluten) and lamb. People with wheat or barley allergy should use rice instead of barley; people with lamb allergy should not eat it. Ask your clinician about safe alternatives.
  • Special therapeutic dietsNot suitable for a low-fat therapeutic diet as written; a version with lean lamb and no barley changes the dish and should be discussed with a clinician.

If you have a medical condition, consult your doctor before changing your diet.

Storage & Use

Storage & Use

How to store
Cool quickly and store in an airtight container.
In the fridge
Lamb soup keeps 3 days in the fridge at 4°C (40°F) or below.
In the freezer
Up to 3 months; freeze without the cabbage for the best texture.
How to reheat
Reheat in a pot over medium heat until boiling and steaming hot throughout, to 74°C (165°F); add a splash of water if the barley has thickened the broth.
Freezing recommended
Yes — soups freeze well and the flavour improves overnight.
Signs it has spoiled
Sour smell, slimy surface, or a grey film on the broth.

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