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Onions Plain Boiled

Onions boiled in milk and water, served with melted butter.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 4 ingredients
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Why it works: Milk and butter are a kitchen classic. They rank in the top 7% of all ingredient pairs, and cooks put them together in 81,283 recipes. Both carry (z)-4-heptenal, which smells biscuit, cream. The science ↓

Onions Plain Boiled

Ingredients

Directions

Prepare

  1. Peel the onions and soak them in cold water for 1 hour.

Cook and serve

  1. Combine equal parts boiling milk and water in a pot.

  2. Add the soaked onions and boil until tender.

  3. Serve the onions with melted butter poured over them.

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. Milk + buttertop 7% of all pairs
    Smell alikemoderate
    Cooked together81,283 recipes

    Shared aroma: (z)-4-heptenal (biscuit, cream).

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

    Shared aroma: decanal (soap, orange peel).

  3. 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
Are the main vegetable, becoming soft and sweet as they cook until tender.
Milk
Adds a mild, creamy flavour and softens the onions in the boiling liquid.
Butter
Adds richness and fat to the finished onions as a served topping.

Swap the onion

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

  1. Potatofits better
  2. Asparagusfits about as well
  3. Leekfits about as well
  4. Onionthe original

Fit is the average pairing score against milk, butter. 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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