Name: Orange Gravy, for Wild Fowl
Ingredients: ½ pint rich brown gravy (or Espagnole); ½ rind of a Seville orange, pared thin; 1 small strip of lemon rind; 1 hazelnut-sized piece of sugar; ¼ pint port or claret; juice of ½ lemon; 1 tablespoon Seville orange juice; cayenne to taste

Why it works: Orange and lemon match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 10,634 recipes. Both carry 3-hexenal, which smells apple, fruity. The science ↓

Orange Gravy, for Wild Fowl

Ingredients

½ pint rich brown gravy (or Espagnole)
½ rind of a Seville orange, pared thin
1 small strip of lemon rind
1 hazelnut-sized piece of sugar
¼ pint port or claret
juice of ½ lemon
1 tablespoon Seville orange juice
cayenne to taste

Directions

Boil the brown gravy with the Seville orange rind, lemon rind, and sugar for about 10 minutes.
Strain the mixture.
Add the port or claret, lemon juice, and Seville orange juice.
Season with cayenne and serve hot.

Recipe from a historical cookbook (Internet Archive).

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.

Orange + lemontop 1% of all pairs

Smell alikestrong

Cooked together10,634 recipes

Shared aroma: 3-hexenal (apple, fruity).
Lemon + hazelnuttop 12% of all pairs

Smell alikestrong

Cooked together205 recipes

Shared aroma: (e,e)-2,4-decadienal (fatty, deep fried).
Orange + hazelnuttop 14% of all pairs

Smell alikemoderate

Cooked together115 recipes

Shared aroma: coumarin (sweet, hay).
Lemon + sugartop 18% of all pairs

Smell alikelow

Cooked together53,532 recipes

Shared aroma: 2-nonenal (fatty, green).
Orange + sugartop 20% of all pairs

Smell alikelow

Cooked together19,212 recipes

Shared aroma: beta-damascenone (apple, rose).

Lemon and sugar 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

Brown gravy: Provides the rich savoury base that the citrus and wine flavours are built on.
Seville orange rind: Releases aromatic oils during boiling, giving the sauce its bitter-fragrant orange character.
Port or claret: Adds wine acidity and depth, rounding out the sauce's flavour.
Lemon juice: Adds acidity that brightens the sauce and balances its richness.
Sugar: Adds a small amount of sweetness to balance the sharp citrus and wine.

The step that matters

Boiling the gravy with the rinds. Boiling extracts aroma and some bitterness from the citrus peel into the gravy. Too short a boil leaves the flavour weak, while over-reduction can make the sauce overly concentrated or bitter.

Swap the hazelnut

How well each one fits the dish's main ingredients (orange, lemon, sugar):

Almondfits better
Pistachiofits better
Chickpeafits better
Hazelnutthe original

Fit is the average pairing score against orange, lemon, 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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Orange Gravy, for Wild Fowl