Why it works: Onion and tomato are a kitchen classic. They rank in the top 8% of all ingredient pairs, and cooks put them together in 20,633 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓
Veal Gravy
Ingredients
Directions
Make the stock
Place the bones, veal remnants, water, onion, lemon peel, salt, and mace in a stewpan.
Simmer for one hour.
Strain the mixture into a basin.
Thicken and serve
Mix butter and flour to thicken, adding a little water.
Boil the thickened mixture.
Stir in the lemon juice.
Serve hot, flavored with tomato sauce or ketchup if desired.
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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Onion + tomatotop 8% of all pairsSmell alikemoderateCooked together20,633 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Lemon + tomatotop 11% of all pairsSmell alikemoderateCooked together4,592 recipes
Shared aroma: 3-hexenal (apple, fruity).
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Butter + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Onion + buttertop 15% of all pairsSmell alikemoderateCooked together42,912 recipes
Shared aroma: decanal (soap, orange peel).
-
Lemon + buttertop 16% of all pairsSmell alikemoderateCooked together41,227 recipes
Shared aroma: 3-hexenal (apple, fruity).
Butter and flour barely smell alike, yet cooks put them together in 124,287 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
- Veal bones and remnants
- Release gelatin and savory flavor into the water as they simmer, giving the gravy body and depth.
- Butter and flour
- Flour thickens the liquid as it boils, while butter adds richness and a smooth mouthfeel.
- Onion
- Adds sweet aromatic flavor to the stock as it simmers.
- Lemon juice
- Adds a small amount of acidity that brightens the rich, savory gravy.
The step that matters
Boil the thickened mixture. Flour must be heated to boiling to swell its starch granules and thicken the gravy fully. Stopping early leaves a thin sauce with a raw, pasty taste.
Swap the tomato
The recipe marks tomato as optional. How well each one fits the dish's main ingredients (veal, onion, lemon, mace, butter, flour):
- Leekfits better
- Shallotfits better
- Arrowrootfits better
- Tomatothe original
Fit is the average pairing score against veal, onion, lemon, mace, butter, flour. 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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