Name: Oyster Cocktails
Ingredients: ½ dozen small oysters per person; 3 teaspoons vinegar; 3 teaspoons grated horseradish; 3 teaspoons tomato ketchup; 6 teaspoons lemon juice; 1 teaspoon Tabasco sauce; Thin slices of buttered brown bread

Why it works: Ketchup and sauce 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 ↓

Oyster Cocktails

Ingredients

½ dozen small oysters per person
3 teaspoons vinegar
3 teaspoons grated horseradish
3 teaspoons tomato ketchup
6 teaspoons lemon juice
1 teaspoon Tabasco sauce
Thin slices of buttered brown bread

Directions

Prepare

Chill the oysters and serving glasses.

Make the sauce

In a bowl, mix vinegar, horseradish, ketchup, lemon juice, and Tabasco sauce.

Serve

Place oysters in chilled glasses and pour the sauce over them.
Serve with a spoon and an oyster fork.
Accompany with thin slices of buttered brown bread.

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.

Ketchup + saucetop 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

Oysters: Provide the main briny, savoury flavour and the cold, tender base of the cocktail.
Horseradish: Adds sharp, pungent heat that cuts through the richness of the oysters.
Vinegar: Adds acidity that brightens the sauce and balances the sweetness of the ketchup.
Tomato ketchup: Adds sweetness and body to the sauce, softening the sharpness of the vinegar and horseradish.
Lemon juice: Adds fresh acidity that lifts the flavour of the oysters and sauce.

The step that matters

Chill the oysters and serving glasses. Cold keeps the oysters firm and fresh-tasting and slows bacterial growth, so chilling both oysters and glasses before serving keeps the cocktail crisp and safe.

Swap the lemon

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

Avocadofits about as well
Lemonthe original
Limefits about as well
Grapefits about as well

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

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Oyster Cocktails