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Escallaped Onions

Onions cooked in a butter, flour, and milk sauce, topped with breadcrumbs and baked.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 7 ingredients
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Why it works: Butter and bread are a kitchen classic. They rank in the top 7% of all ingredient pairs, and cooks put them together in 27,232 recipes. Both carry delta-decalactone, which smells sweet, creamy. The science ↓

Escallaped Onions

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 the onions

  1. Boil the onions in water until tender, changing the water after 10-15 minutes.

  2. Slice the onions crosswise once tender.

Make the sauce

  1. Melt butter in a saucepan, stir in flour, cook for 1 minute.

  2. Gradually add milk, salt, and pepper, stirring until thickened.

Bake and serve

  1. Pour sauce over sliced onions.

  2. Top with bread crumbs and bake at 400°F (200°C) until brown.

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. Butter + breadtop 7% of all pairs
    Smell alikemoderate
    Cooked together27,232 recipes

    Shared aroma: delta-decalactone (sweet, creamy).

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

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

  3. Milk + breadtop 11% of all pairs
    Smell alikemoderate
    Cooked together11,466 recipes

    Shared aroma: 2-undecenal (sweet).

  4. Onion + peppertop 11% of all pairs
    Smell alikemoderate
    Cooked together68,474 recipes

    Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).

  5. Butter + flourtop 12% of all pairs
    Smell alikelow
    Cooked together124,287 recipes

    Shared aroma: isobutyraldehyde (malty, green).

Butter and flour barely smell alike, yet cooks put them together in 124,287 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 and provide its mild, sweet flavor.
Milk
Forms the liquid base of the sauce, giving it body and a creamy texture.
Butter
Adds fat and richness, and forms the base of the roux with the flour.
Flour
Thickens the milk into a smooth sauce when cooked with the butter.
Bread crumbs
Form a topping that browns in the oven and adds a crisp texture.

The step that matters

Gradually add milk, salt, and pepper, stirring until thickened. Adding the liquid slowly while stirring keeps the flour mixture smooth. Adding it all at once can leave lumps, because the starch clumps before it can disperse evenly in the liquid.

Swap the onion

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

  1. Capsicumfits better
  2. Potatofits better
  3. Shallotfits better
  4. Onionthe original

Fit is the average pairing score against milk, butter, flour, pepper, bread. 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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