Why it works: Barley and lemon work together. They rank in the top 13% of all ingredient pairs, and cooks put them together in 484 recipes. Both carry 3-hexenal, which smells apple, fruity. The science ↓
Barley Water
Ingredients
Directions
Prepare
Wash the pearl barley in several waters until clean.
Place the barley in a jug or pitcher.
Rub several lumps of sugar on the lemon to absorb the oil.
Add the sugared lemon to the jug.
Peel the lemon, leaving minimal white pulp.
Add the peeled lemon to the jug.
Steep and serve
Pour boiling water into the jug until full.
Let it sit for half an hour before serving.
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 + lemontop 13% of all pairsSmell alikemoderateCooked together484 recipes
Shared aroma: 3-hexenal (apple, fruity).
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Sugar + lemontop 18% of all pairsSmell alikelowCooked together53,532 recipes
Shared aroma: 2-nonenal (fatty, green).
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Barley + sugartop 21% of all pairsSmell alikemoderateCooked together755 recipes
Shared aroma: beta-damascenone (apple, rose).
Sugar and lemon barely smell alike, yet cooks put them together in 53,532 recipes: they work on texture and structure more than aroma.
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Pearl barley
- Gives the drink its body and mild, grain-like flavour as it steeps in the water.
- Sugar
- Absorbs the lemon oil from the peel and adds sweetness to the drink.
- Lemon
- Supplies acidity and fragrant citrus flavour from its juice and peel.
The step that matters
Rub the sugar on the lemon. Rubbing the lemon with sugar lifts the fragrant oils from the peel into the sugar, so they flavour the drink rather than staying on the rind. Peeling with minimal white pulp keeps the bitter pith out of the jug.
Swap the lemon
How well each one fits the dish's main ingredients (barley, sugar):
- Vanillafits better
- Figfits better
- Raisinfits better
- Lemonthe original
Fit is the average pairing score against barley, sugar. 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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