Why it works: Barley and leek match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 142 recipes. Both carry 1-octen-3-ol, which smells mushroom, earthy. The science ↓
Scots Kale
Ingredients
Directions
Make the broth
Put barley in cold water and bring to a boil.
Skim off the scum, then add the beef and salt.
Let it boil for three hours.
Cook the greens
Boil the kale until tender in a separate pot.
If desired, add leeks with the greens for flavor.
Transcribed from a scanned cookbook and modernised for today's kitchens. Where the book gave no heat or time, or said "a moderate oven", the temperatures and times here may be modern equivalents rather than the book's own figures.
Explore the science
The flavor team
The pairs that carry this dish. Each one is judged two ways: how much their aromas overlap, and how often cooks already put them together.
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Barley + leektop 1% of all pairsSmell alikestrongCooked together142 recipes
Shared aroma: 1-octen-3-ol (mushroom, earthy).
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Kale + leektop 4% of all pairsSmell alikestrongCooked together4 recipes
Shared aroma: coumarin (sweet, hay).
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Barley + beeftop 7% of all pairsSmell alikemoderateCooked together458 recipes
Shared aroma: 2-furfurylthiol (coffee, roasted).
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Barley + kaletop 8% of all pairsSmell alikestrongCooked together17 recipes
Shared aroma: coumarin (sweet, hay).
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Beef + leektop 12% of all pairsSmell alikemoderateCooked together659 recipes
Shared aroma: ethyl butyrate (apple, fruity).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Barley
- Its starch thickens the broth and gives it a chewy texture.
- Beef
- Meat releases flavor and gelatin into the broth, giving it body.
- Kale
- Leafy greens that soften as they cook, adding color and an earthy taste.
- Leeks
- Mild, onion-like aroma and sweetness that flavor the greens.
The step that matters
Skim off the scum. Foam that rises early in boiling contains impurities that can cloud the broth and add off flavors. Removing it keeps the broth clear and clean-tasting.
Swap the leek
The recipe marks leek as optional. How well each one fits the dish's main ingredients (barley, beef, kale):
- Turnipfits about as well
- Leekthe original
- Chivefits about as well
- Shallotfits less well
Fit is the average pairing score against barley, beef, kale. Candidates are from the same food group and used in at least 100 recipes.
“What each ingredient does” and “The step that matters” were written by Claude from this recipe’s own method and reviewed in samples by CompKitchen.
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