Name: Shell Fish
Ingredients: 2 tablespoons grated horseradish; ½ teaspoon Tabasco sauce; 2 tablespoons tomato ketchup; juice of 2 lemons; 1 teaspoon salt; 5 or 6 oysters; cracked ice; sandwiches of Boston brown bread

Why it works: Sauce and ketchup match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 1,099 recipes. Both carry ethanol, which smells alcoholic, ethereal. The science ↓

Shell Fish

Ingredients

Directions

Prepare

Mix the horseradish, Tabasco sauce, tomato ketchup, lemon juice, and salt in a bowl.
Divide the mixture into six or eight cocktail cups.

Assemble and serve

Set the cups in the center of oyster plates filled with cracked ice.
Place 5 or 6 oysters on each plate.
Serve sandwiches of Boston brown bread alongside.

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.

Sauce + ketchuptop 1% of all pairs

Smell alikestrong

Cooked together1,099 recipes

Shared aroma: ethanol (alcoholic, ethereal).
Horseradish + lemontop 9% of all pairs

Smell alikestrong

Cooked together1,155 recipes

Shared aroma: coumarin (sweet, hay).
Tomato + breadtop 10% of all pairs

Smell alikemoderate

Cooked together1,013 recipes

Shared aroma: 2-nonenal (fatty, green).
Horseradish + ketchuptop 10% of all pairs

Smell alikemoderate

Cooked together223 recipes

Shared aroma: ethanol (alcoholic, ethereal).
Tomato + lemontop 11% of all pairs

Smell alikemoderate

Cooked together4,592 recipes

Shared aroma: 3-hexenal (apple, fruity).

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

What each ingredient does

Horseradish: Adds sharp, pungent heat that cuts through the richness of the oysters.
Tomato ketchup: Contributes sweetness and body, rounding out the sauce's sharpness.
Lemon juice: Provides acidity that brightens the sauce and balances the sweetness of the ketchup.
Oysters: Main ingredient, served raw so their briny, delicate flavor is the centerpiece.

Swap the lemon

How well each one fits the dish's main ingredients (horseradish, sauce, tomato, ketchup, oyster, bread):

Avocadofits about as well
Lemonthe original
Limefits about as well
Applefits less well

Fit is the average pairing score against horseradish, sauce, tomato, ketchup, oyster, bread. 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.