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Boiled Onions

A dish of onions simmered in milk and water until tender.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 3 ingredients
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Why it works: Onion and milk are a kitchen classic. They rank in the top 20% of all ingredient pairs, and cooks put them together in 13,418 recipes. Both carry hexanal, which smells green, grassy. The science ↓

Boiled Onions

Ingredients

Directions

Prepare

  1. Peel and wash the onions.

  2. Place the onions in a broad-bottomed pan or kettle without stacking them.

Cook

  1. Cover the onions with equal parts milk and water.

  2. Simmer slowly until the onions are tender.

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

    Shared aroma: hexanal (green, grassy).

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

What each ingredient does

Onions
Main vegetable; cooking softens its fibres until tender and sweetens it.
Milk
Adds richness and a mild sweetness to the cooking liquid, softening the onions' sharpness.
Water
Makes up the cooking liquid with the milk, helping the onions cook gently and evenly.

The step that matters

Simmer slowly until the onions are tender. Milk scorches and can curdle at a hard boil, sticking to the pan. Gentle simmering keeps the liquid smooth and lets the onions cook through evenly.

“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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