Name: Turtle Sauce
Ingredients: 1 pint beef gravy, thickened; ⅓ cup Madeira; juice and peel of ½ lemon; a few leaves of basil; 1 shallot, quartered; a few grains of cayenne pepper or curry powder; a little essence of anchovy; optional: 12 turtle forcemeat balls

Why it works: Lemon and basil match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 1,823 recipes. Both carry 3-hexenal, which smells apple, fruity. The science ↓

Turtle Sauce

Ingredients

1 pint beef gravy, thickened
⅓ cup Madeira
juice and peel of ½ lemon
a few leaves of basil
1 shallot, quartered
a few grains of cayenne pepper or curry powder
a little essence of anchovy
optional: 12 turtle forcemeat balls

Directions

In a stew pan, combine the beef gravy, Madeira, lemon juice and peel, basil, shallot, cayenne pepper or curry powder, and essence of anchovy.
Simmer the mixture together for 5 minutes.
Strain the sauce through a fine sieve.
If desired, add the turtle forcemeat balls.

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.

Lemon + basiltop 1% of all pairs

Smell alikestrong

Cooked together1,823 recipes

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

Smell alikestrong

Cooked together27,047 recipes

Shared aroma: trans-2-nonenal (cardboard, fatty).
Basil + peppertop 4% of all pairs

Smell alikestrong

Cooked together5,294 recipes

Shared aroma: methyl cinnamate (strawberry).
Lemon + shallottop 6% of all pairs

Smell alikestrong

Cooked together2,523 recipes

Shared aroma: eucalyptol (eucalyptus, herbal).
Basil + shallottop 7% of all pairs

Smell alikestrong

Cooked together473 recipes

Shared aroma: eucalyptol (eucalyptus, herbal).

Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs

What each ingredient does

Beef gravy: Forms the savory base that the sauce is built on.
Madeira: Adds a rich, sweet, fortified-wine depth to the sauce.
Lemon: Contributes acidity and bright aroma from the juice and peel.
Shallot: Adds a mild aromatic onion flavor as it simmers in the sauce.

Swap the shallot

How well each one fits the dish's main ingredients (beef, lemon, basil, pepper, anchovy):

Capsicumfits better
Tomatofits better
Spinachfits better
Shallotthe original

Fit is the average pairing score against beef, lemon, basil, pepper, anchovy. 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.