Cock-a-leekie soup appears in 16th-century Scottish texts and is a traditional course at Burns Suppers, the dinners held in honour of poet Robert Burns. The prunes are a defining feature — they sweeten the leek's slight bitterness and add a fruity counterpoint to the chicken broth. The dish exemplifies medieval Scottish cookery's love of dried fruit in savory dishes, a legacy of trade with the Iberian peninsula via French alliances.
Each spoonful brings something different: silky leek, tender chicken shreds, soft prune that catches you off-guard with sweetness. The broth is light and golden, peppery, salted just enough — winter soup that tastes of three foods, not eight ingredients.
Leeks have less sulfur than onions, so they don't overwhelm the delicate chicken broth — they melt into the liquid and contribute body. Prunes' high natural sugar (60-70%) caramelizes lightly during simmer, adding the soup's hallmark sweetness. The bones produce gelatin that gives the broth its weight on the tongue.
Variations
Traditional Scottish version uses prunes; modern restaurants sometimes skip them; the Welsh cawl is a related Celtic broth that uses lamb instead of chicken — three Celtic broths.
On the Palate
Where Cock-a-Leekie Soup sits in the British flavor cloud
Ingredients
Serves 6
How it's made
5 steps · 30 min active + 2 hours waiting
- 195 min
Place 1 whole chicken (1.5kg) in large pot. Cover with 2.5L water. Add 1 chopped onion, 2 bay leaves, 6 peppercorns. Bring to simmer; skim foam. Cook 90 min.
Watch outSkim the grey foam off as it first comes up to a simmer — leave it and the broth turns cloudy and muddy-tasting instead of clean and golden.
- 210 min
Remove chicken; cool slightly. Strip meat from bones, dice. Return bones to pot to continue extracting broth.
- 322 min
Wash and slice 6 leeks (white and pale green parts) into 1cm rounds. Add to broth; simmer 20 min.
Watch outSimmer the leeks just until they go soft and melting, about twenty minutes — they should slip into the broth and give it body, not stay stiff.
- 413 min
Add 200g prunes, halved and pitted. Add chicken meat back. Simmer 10 min.
Watch outAdd the prunes near the end — ten minutes is enough to lend their sweetness; simmer them too long and they dissolve into mush.
- 55 min
Strain bones out. Season with salt and pepper. Serve hot in deep bowls with crusty bread.
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