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Brown Onion Sauce

A sauce made by stewing onions in butter, then simmering with gravy or broth and seasoning with cayenne.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 4 ingredients
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Why it works: Butter and onion are a kitchen classic. They rank in the top 15% of all ingredient pairs, and cooks put them together in 42,912 recipes. Both carry decanal, which smells soap, orange peel. The science ↓

Brown Onion Sauce

Ingredients

Directions

Prepare the onions

  1. Cut off both ends of the onions and slice them.

  2. Melt the butter in a saucepan and add the sliced onions.

  3. Stew the onions over medium heat until lightly colored.

Finish the sauce

  1. Pour in the gravy or broth and boil until the onions are tender.

  2. Strain the sauce to remove the onion pieces.

  3. Season with cayenne and serve hot.

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. Butter + oniontop 15% of all pairs
    Smell alikemoderate
    Cooked together42,912 recipes

    Shared aroma: decanal (soap, orange peel).

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

What each ingredient does

Butter
Adds fat and rich flavor while helping the onions soften and color gently.
Onions
As they cook slowly they turn sweet and savory and give the sauce body.
Gravy or broth
Forms the liquid base that carries flavor and softens the onions as it boils.

The step that matters

Stew the onions until lightly colored. Stewing over medium heat lets the onions soften and brown slowly, building sweetness. Higher heat can scorch the sugars in the onions, leaving a bitter taste that carries into the finished sauce.

“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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