Name: Sharp Brown Sauce
Ingredients: 1 tablespoon chopped onion; 3 tablespoons cider vinegar; 6 tablespoons water; 3 tablespoons tomato ketchup; ¼ teaspoon pepper; ¼ teaspoon salt; ½ cup melted butter

Why it works: Cider and vinegar are a kitchen classic. They rank in the top 6% of all ingredient pairs, and cooks put them together in 3,431 recipes. Both carry 4-ethyl-2-methoxyphenol, which smells smoky, clove. The science ↓

Sharp Brown Sauce

Ingredients

Directions

Make the sauce

In a saucepan, combine the chopped onion, cider vinegar, water, tomato ketchup, pepper, and salt.
Add the melted butter and stir well.
Heat the mixture over medium heat until warmed through.

Serve

Serve as a sauce for meats or vegetables.

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.

Cider + vinegartop 6% of all pairs

Smell alikemoderate

Cooked together3,431 recipes

Shared aroma: 4-ethyl-2-methoxyphenol (smoky, clove).
Tomato + peppertop 7% of all pairs

Smell alikemoderate

Cooked together17,923 recipes

Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
Onion + tomatotop 8% of all pairs

Smell alikemoderate

Cooked together20,633 recipes

Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
Onion + peppertop 11% of all pairs

Smell alikemoderate

Cooked together68,474 recipes

Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
Onion + vinegartop 14% of all pairs

Smell alikemoderate

Cooked together18,226 recipes

Shared aroma: acetic acid (sour, vinegar).

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

What each ingredient does

Melted butter: Adds fat and richness, giving the sauce a smooth, rounded mouthfeel.
Cider vinegar: Adds acidity that sharpens the sauce and balances the sweetness of the ketchup.
Tomato ketchup: Provides tomato flavour, sweetness and body to the sauce.
Chopped onion: Contributes savoury aroma and depth of flavour as it softens in the liquid.

Swap the tomato

How well each one fits the dish's main ingredients (onion, cider, vinegar, ketchup, pepper, butter):

Capsicumfits better
Mustardfits better
Horseradishfits better
Tomatothe original

Fit is the average pairing score against onion, cider, vinegar, ketchup, pepper, butter. 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.