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Glazed Onions

Glazed onions are onions simmered in butter, sugar, and gravy until tender, then coated in a reduced glaze.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 6 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 ↓

Glazed Onions

Ingredients

Directions

Prepare

  1. Choose small onions of similar size.

  2. In a pot, melt the butter and add the sugar, salt, and pepper.

Cook the onions

  1. Add enough gravy to cover the onions and bring to a gentle boil.

  2. Cook until the onions are tender.

  3. Remove the onions and increase the heat to boil the gravy without a lid until it reduces to a glaze.

Glaze and serve

  1. Coat the onions in the glaze by shaking them in it.

  2. Serve the glazed onions around the mutton.

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 + buttertop 15% of all pairs
    Smell alikemoderate
    Cooked together42,912 recipes

    Shared aroma: decanal (soap, orange peel).

  3. Butter + sugartop 17% of all pairs
    Smell alikemoderate
    Cooked together98,233 recipes

    Shared aroma: guaiacol (smoky, sweet).

  4. Butter + peppertop 21% of all pairs
    Smell alikemoderate
    Cooked together85,593 recipes

    Shared aroma: trans-2-nonenal (cardboard, fatty).

  5. Sugar + peppertop 32% of all pairs
    Smell alikelow
    Cooked together19,401 recipes

    Shared aroma: 2-nonenal (fatty, green).

Sugar and pepper barely smell alike, yet cooks put them together in 19,401 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
Form the main body of the dish, becoming tender and sweet as they cook.
Butter
Adds richness and helps the sugar caramelise slightly for flavour.
Lump sugar
Adds sweetness and helps the gravy reduce to a glossy glaze.
Gravy
Provides savoury liquid that cooks the onions and reduces into the glaze.

The step that matters

Reducing the gravy to a glaze. Boiling uncovered lets water evaporate and concentrates the gravy's sugars and proteins, so it thickens and clings to the onions. If it is under-reduced it stays thin and runs off; if over-reduced it can scorch on the pan.

Swap the onion

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

  1. Capsicumfits better
  2. Potatofits better
  3. Sweet potatofits better
  4. Onionthe original

Fit is the average pairing score against butter, sugar, pepper. 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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