Name: Oyster Soup
Ingredients: 1 pint water; 1 quart oyster liquor; 3 quarts sweet milk; ½ pound butter; Salt to taste; Pepper to taste; 1¼ pounds rolled crackers; 6 whole allspice (optional)

Why it works: Pepper and allspice match in chemistry and in kitchens. They rank in the top 5% of all ingredient pairs, and 6,395 recipes mention both. Both carry estragole, which smells anise, licorice. The science ↓

Oyster Soup

Ingredients

Directions

In a large pot, combine the water, oyster liquor, and sweet milk.
Add the butter, salt, and pepper, and bring to a boil.
Once boiling, add the oysters and rolled crackers.
Let it boil for a few minutes until heated through.
For added flavor, include whole allspice if desired.

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 aroma chemistry they share, and how many recipes mention both.

Pepper + allspicetop 5% of all pairs

Aroma overlapstrong

Mentioned together6,395 recipes

Shared aroma: estragole (anise, licorice).
Milk + buttertop 7% of all pairs

Aroma overlapmoderate

Mentioned together81,283 recipes

Shared aroma: (z)-4-heptenal (biscuit, cream).
Oyster + buttertop 12% of all pairs

Aroma overlapmoderate

Mentioned together8,184 recipes

Shared aroma: 2,6-nonadienal (cucumber, green).
Oyster + milktop 20% of all pairs

Aroma overlapmoderate

Mentioned together2,933 recipes

Shared aroma: (z)-4-heptenal (biscuit, cream).
Butter + peppertop 21% of all pairs

Aroma overlapmoderate

Mentioned together85,593 recipes

Shared aroma: trans-2-nonenal (cardboard, fatty).

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

Flavor stand-ins for the allspice

The recipe marks allspice as optional. How well each one fits the dish's main ingredients (oyster, milk, butter, pepper):

Parsleybetter flavor fit
Nutmegbetter flavor fit
Cinnamonbetter flavor fit
Allspicethe original

Fit is the average pairing score against oyster, milk, butter, pepper. Candidates are from the same food group and used in at least 100 recipes. This compares flavor only: it does not check the job the ingredient does in the dish (bulk, moisture, acidity, structure).