Name: Piquant Sauce
Ingredients: 1 pint brown sauce; 2 tablespoons capers; 2 tablespoons chopped gherkin; 2 teaspoons finely chopped shallot; ½ pint vinegar; Pepper to taste; Coarse sea salt to taste

Why it works: Capers and shallot match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and 405 recipes mention both. Both carry coumarin, which smells sweet, hay. The science ↓

Piquant Sauce

Ingredients

Directions

Combine the capers, shallot, and gherkin in the vinegar and simmer until the shallot is soft.
Pour in the brown sauce and bring to a boil.
Season with pepper and coarse sea salt to taste.

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.

Capers + shallottop 1% of all pairs

Aroma overlapstrong

Mentioned together405 recipes

Shared aroma: coumarin (sweet, hay).
Sauce + caperstop 11% of all pairs

Aroma overlapmoderate

Mentioned together678 recipes

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

Aroma overlapmoderate

Mentioned together5,898 recipes

Shared aroma: 2,4-decadienal (seaweed).
Shallot + vinegartop 12% of all pairs

Aroma overlapmoderate

Mentioned together2,374 recipes

Shared aroma: isobutyraldehyde (malty, green).
Capers + peppertop 12% of all pairs

Aroma overlapmoderate

Mentioned together2,088 recipes

Shared aroma: coumarin (sweet, hay).

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

What each ingredient does

Brown sauce: Forms the base of the sauce and supplies most of its savoury, tangy body.
Vinegar: Adds acidity that sharpens the flavour and cuts the richness of the brown sauce.
Capers: Contribute sharp, briny bursts of flavour that give the sauce its piquant character.
Gherkin: Adds crisp texture and a sour, tangy note that complements the capers.
Shallot: Softens while simmering, lending a mild, sweet onion-like aroma and flavour.

Flavor stand-ins for the capers

How well each one fits the dish's main ingredients (sauce, shallot, vinegar, pepper):

Tarragonabout as good a flavor fit
Capersthe original

Fit is the average pairing score against sauce, shallot, vinegar, 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).

“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.