Why it works: Onion and capers match in chemistry and in kitchens. They rank in the top 7% of all ingredient pairs, and cooks put them together in 1,381 recipes. Both carry coumarin, which smells sweet, hay. The science ↓
Apple Salad with Herrings or Sardellen
Ingredients
Directions
Prepare
Soak the herrings or sardines, then chop them finely.
Make the salad
Mix the chopped fish with salad oil, vinegar, hard-boiled eggs (chopped finely), and capers.
Cut the apples into tiny dice and add them to the mixture.
Season with pepper and sugar, then mix all thoroughly.
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.
-
Onion + caperstop 7% of all pairsSmell alikestrongCooked together1,381 recipes
Shared aroma: coumarin (sweet, hay).
-
Onion + vinegartop 14% of all pairsSmell alikemoderateCooked together18,226 recipes
Shared aroma: acetic acid (sour, vinegar).
-
Vinegar + sugartop 15% of all pairsSmell alikemoderateCooked together20,806 recipes
Shared aroma: beta-damascenone (apple, rose).
-
Apple + vinegartop 16% of all pairsSmell alikemoderateCooked together1,884 recipes
Shared aroma: isoamyl acetate (banana, fruity).
-
Capers + vinegartop 16% of all pairsSmell alikemoderateCooked together1,453 recipes
Shared aroma: isobutyraldehyde (malty, green).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Apples
- Provide crisp texture and a fresh, lightly sweet flavour.
- Vinegar
- Adds acidity that sharpens the flavour and balances the oil and fish.
- Salad oil
- Adds fat and moisture, carrying flavour and softening the fish.
- Sardines or hard-boiled eggs
- Supply the main protein and body of the salad.
The step that matters
Chop the apples into tiny dice and mix thoroughly. Apple flesh browns once cut, so dicing and mixing promptly keeps the salad fresh-looking. Thorough mixing spreads the acidic vinegar and sugar evenly so no bite tastes sharp or bland.
Swap the apple
How well each one fits the dish's main ingredients (egg, onion, capers, vinegar, sugar):
- Avocadofits better
- Lemonfits better
- Cherryfits better
- Applethe original
Fit is the average pairing score against egg, onion, capers, vinegar, 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.
You might also like
The free Flavor Lab newsletter: one surprising pairing a week and the molecular reason it works, in 60 seconds. No spam, unsubscribe anytime.
Prefer an account? Create a free account to save pairings and unlock the full chemistry.
Chicken Salad623 recipes
Salad Dressing491 recipes
Tomato Salad179 recipes
Cold Slaw160 recipes