Why it works: Lettuce and grapefruit work together. They rank in the top 3% of all ingredient pairs, and 117 recipes mention both. Both carry trans-2-hexenal, which smells green, leafy. The science ↓
The recipe
Serves 6Ingredients
Contains: tree nuts, soy, fish (auto-detected from the ingredients and method; we can miss things, so check labels)
Directions
Method written by CompKitchen from the ingredient list. Not the original author's method, not kitchen-tested.
Pat the duck breasts dry and score the skin in a shallow crosshatch without cutting into the flesh.
Place the duck skin-side down in a cold dry frying pan over medium-low heat. Cook 12 to 14 minutes, pouring off the fat as it renders, until the skin is crisp and golden.
Flip the duck and cook 2 to 4 minutes more until the thickest part reaches 165°F (74°C). Rest for 5 minutes, then slice thinly.
Whisk the fish sauce, lime juice, palm sugar or muscovado and tamarind paste until the sugar dissolves. Stir in the chopped red and green bird's-eye chillies.
Toast the cashews in a dry small pan over medium heat for 2 minutes, shaking often, until fragrant.
Tear the lettuces into a large bowl. Add the radishes, spring onions, grapefruit segments, watermelon chunks and picked mint, coriander and Thai basil.
Pour the dressing over the salad and toss gently to combine.
Top with the sliced duck and toasted cashews and serve straight away.
Explore the science
The flavor team
The pairs that carry this dish. Each one is judged two ways: how much aroma chemistry they share, and how many recipes mention both.
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Lettuce + grapefruittop 3% of all pairsAroma overlapmoderateMentioned together117 recipes
Shared aroma: trans-2-hexenal (green, leafy).
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Mint + coriandertop 3% of all pairsAroma overlapstrongMentioned together940 recipes
Shared aroma: beta-phellandrene (minty, terpene).
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Grapefruit + minttop 3% of all pairsAroma overlapmoderateMentioned together35 recipes
Shared aroma: myrcene (balsamic, herbaceous).
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Radish + coriandertop 4% of all pairsAroma overlapmoderateMentioned together57 recipes
Shared aroma: 2-methoxy-4-vinylphenol (clove, smoky).
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Grapefruit + coriandertop 4% of all pairsAroma overlapstrongMentioned together46 recipes
Shared aroma: 2-methoxy-4-vinylphenol (clove, smoky).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
Flavor stand-ins for the thai basil
How well each one fits the dish's main ingredients (lettuce, radish, onion, grapefruit, mint, coriander, fish sauce):
- Gingerbetter flavor fit
- Peppermintbetter flavor fit
- Cuminbetter flavor fit
- Thai basilthe original
Fit is the average pairing score against lettuce, radish, onion, grapefruit, mint, coriander, fish sauce. Candidates are from the same food group and used in at least 100 recipes. This compares flavor only: it does not check the job the ingredient does in the dish (bulk, moisture, acidity, structure).
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