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Onions Baked and Browned

Onions baked and browned with salt, pepper, sugar, and milk.

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 Baked and Browned

Ingredients

Directions

The book gives no oven temperature. The 400°F (200°C) in the steps was added when the recipe was transcribed, as a starting point.

Prepare

  1. Cut a slice from the top and bottom of each onion and peel them in a bowl of water.

Boil

  1. Bring a pot of salted water to a boil and add the milk to whiten the water.

  2. Add the onions and boil until tender, about 40 to 60 minutes.

Bake

  1. Drain the onions and place them in a baking pan.

  2. Sprinkle with salt, pepper, and sugar, then add a little of the boiling liquid.

  3. Bake in a 400°F (200°C) oven until the onions are nicely browned.

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. Sugar + milktop 18% of all pairs
    Smell alikelow
    Cooked together77,875 recipes

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

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

    Shared aroma: hexanal (green, grassy).

  4. Pepper + milktop 22% of all pairs
    Smell alikemoderate
    Cooked together26,984 recipes

    Shared aroma: ethyl 2-methylbutyrate (fruity, apple).

  5. Pepper + sugartop 32% of all pairs
    Smell alikelow
    Cooked together19,401 recipes

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

Sugar and milk barely smell alike, yet cooks put them together in 77,875 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
Soften during boiling and brown in the oven, becoming sweet and tender as their starches and sugars develop.
Milk
Whitens the boiling water, helping keep the onions pale during cooking.
Sugar
Adds sweetness and promotes browning on the onion surfaces in the oven.

The step that matters

Bake until nicely browned. Onions are already cooked tender by boiling, so the oven step is for browning. Watch closely, because sugars caramelise and can scorch once the surface darkens.

Swap the onion

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

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

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