Why it works: Pepper and onion are a kitchen classic. They rank in the top 11% of all ingredient pairs, and cooks put them together in 68,474 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓
Catsup Gravy
Ingredients
Directions
Prepare
Cut meat remnants into small pieces.
Add enough water to cover the meat.
Season with coarse sea salt, black pepper, and sugar.
Simmer
Stir in catsup, sliced onion, and apple.
Simmer for 30 minutes.
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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Pepper + oniontop 11% of all pairsSmell alikemoderateCooked together68,474 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Meat + oniontop 17% of all pairsSmell alikelowCooked together6,364 recipes
Shared aroma: 2,4-decadienal (seaweed).
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Sugar + appletop 18% of all pairsSmell alikelowCooked together16,478 recipes
Shared aroma: beta-damascenone (apple, rose).
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Pepper + appletop 18% of all pairsSmell alikemoderateCooked together3,026 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Onion + appletop 19% of all pairsSmell alikemoderateCooked together3,206 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
Sugar and apple barely smell alike, yet cooks put them together in 16,478 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
- Meat remnants
- Provides the savory base and body of the gravy as it simmers.
- Catsup
- Adds tangy sweetness and deep color to the simmering liquid.
- Onion
- Contributes aroma and mild sweetness as it softens in the liquid.
- Apple
- Softens during simmering, adding gentle sweetness and body to the gravy.
Swap the apple
How well each one fits the dish's main ingredients (meat, pepper, sugar, onion):
- Avocadofits better
- Limefits better
- Lemonfits better
- Applethe original
Fit is the average pairing score against meat, pepper, sugar, onion. 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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