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Onions Boiled

Boiled onions simmered until tender, then tossed in melted butter 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 ↓

Onions Boiled

Ingredients

Directions

Prepare

  1. Peel the onions and cut off the ends.

Boil

  1. Place them in a pot with cold water and bring to a boil for 2 minutes.

  2. Drain the water, add cold salted water, and boil slowly until tender, about 30 to 40 minutes depending on size.

Finish and serve

  1. Drain the onions completely, pour melted butter over them, and sprinkle with pepper and salt before serving 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. 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 + peppertop 21% of all pairs
    Smell alikemoderate
    Cooked together85,593 recipes

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

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

What each ingredient does

White silverskin onions
Form the main body of the dish, turning sweet and soft as they cook.
Melted butter
Adds richness and a silky mouthfeel to the cooked onions.

The step that matters

Boil slowly until tender. Gentle simmering softens the onions evenly through to the centre without breaking them apart. A hard, rapid boil can make the outer layers mushy before the core is tender, so keep the water at a slow simmer and test with a knife.

Swap the onion

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

  1. Capsicumfits better
  2. Potatofits better
  3. Carrotfits about as well
  4. Onionthe original

Fit is the average pairing score against butter, 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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