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Sauce

Onion Sauce

A sauce made from onions, milk, and white sauce, seasoned with salt and pepper.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 5 ingredients
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Why it works: Onion and pepper are a kitchen classic. They rank in the top 11% of all ingredient pairs, and cooks put them together in 68,474 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓

Onion Sauce

Ingredients

Directions

  1. Peel the onions and place them in slightly salted water to preserve their color.

  2. Put the onions in a saucepan and cover with cold water.

  3. Bring to a boil, then strain the onions.

  4. Return the onions to the saucepan and add equal parts milk and water.

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

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

  2. Onion + saucetop 19% of all pairs
    Smell alikelow
    Cooked together10,474 recipes

    Shared aroma: ethanol (alcoholic, ethereal).

  3. Onion + milktop 20% of all pairs
    Smell alikemoderate
    Cooked together13,418 recipes

    Shared aroma: hexanal (green, grassy).

  4. Milk + peppertop 22% of all pairs
    Smell alikemoderate
    Cooked together26,984 recipes

    Shared aroma: ethyl 2-methylbutyrate (fruity, apple).

  5. Pepper + saucetop 27% of all pairs
    Smell alikelow
    Cooked together15,303 recipes

    Shared aroma: ethanol (alcoholic, ethereal).

Onion and sauce barely smell alike, yet cooks put them together in 10,474 recipes: they work on texture and structure more than aroma.

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

What each ingredient does

Onions
Cooked onions add mild sweetness and aroma to the sauce.
Milk
Milk adds creaminess and body to the sauce.

Swap the onion

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

  1. Capsicumfits better
  2. Tomatofits better
  3. Potatofits better
  4. Onionthe original

Fit is the average pairing score against milk, pepper, sauce. 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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