Skip to main content
Sauce

Shirley Sauce

A tomato-based sauce with onions, peppers, vinegar, sugar, and salt, simmered for hours.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 6 ingredients
Jump to recipe ↓

Why it works: Tomato and pepper are a kitchen classic. They rank in the top 7% of all ingredient pairs, and cooks put them together in 17,923 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓

Shirley Sauce

Ingredients

Directions

Prepare

  1. Chop the peppers and onions finely.

  2. Combine all ingredients in a pot.

Cook

  1. Boil slowly for 3 hours.

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.

  1. Tomato + peppertop 7% of all pairs
    Smell alikemoderate
    Cooked together17,923 recipes

    Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).

  2. Tomato + oniontop 8% of all pairs
    Smell alikemoderate
    Cooked together20,633 recipes

    Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).

  3. Onion + peppertop 11% of all pairs
    Smell alikemoderate
    Cooked together68,474 recipes

    Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).

  4. Onion + vinegartop 14% of all pairs
    Smell alikemoderate
    Cooked together18,226 recipes

    Shared aroma: acetic acid (sour, vinegar).

  5. Pepper + vinegartop 14% of all pairs
    Smell alikemoderate
    Cooked together27,814 recipes

    Shared aroma: 4'-methylacetophenone (bitter almond).

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

What each ingredient does

Ripe tomatoes
Provide the main body, moisture, and fresh tomato flavor that the long cooking concentrates.
Onions
Add savory aroma and depth as they soften and break down during the long cook.
Red peppers
Contribute sweetness, colour, and vegetable flavor to the sauce.
Vinegar
Adds sharp acidity that brightens the sauce and helps keep it stable.
Sugar
Adds sweetness that balances the sharpness of the vinegar and tomatoes.

The step that matters

Boil slowly for 3 hours. Slow evaporation thickens the sauce and concentrates its flavour. If the heat is too high, the sugars and solids can catch and scorch on the bottom of the pot, giving a burnt taste.

Swap the onion

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

  1. Capsicumfits better
  2. Cucumberfits better
  3. Mustardfits better
  4. Onionthe original

Fit is the average pairing score against tomato, pepper, vinegar, sugar. 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.

You might also like

Wine Sauce (for stewed fruit)Wine Sauce (for stewed fruit)186 recipesCaper SauceCaper Sauce180 recipesBrown SauceBrown Sauce141 recipesDutch SauceDutch Sauce74 recipes