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Scalloped Potatoes

Layered thinly sliced potatoes baked with butter, flour, milk, pepper, and sea salt.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 6 ingredients
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Why it works: Butter and milk 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 ↓

Scalloped Potatoes

Oven, in the book's wordsA slow oven

Ingredients

Directions

The book says “a slow oven”. The 300°F (150°C) in the steps is the modern equivalent, not the book's own figure.

Prepare

  1. Slice raw potatoes very thin.

  2. Place a layer half an inch thick loosely in the bottom of a baking dish.

Layer and season

  1. Season with pepper and coarse sea salt to taste.

  2. Spread with bits of butter and dredge with a little flour.

  3. Repeat layering and seasoning until the dish is half full.

  4. Cover with milk.

Bake

  1. Bake in a slow oven at 300°F (150°C), covering with a plate at first.

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 + milktop 7% of all pairs
    Smell alikemoderate
    Cooked together81,283 recipes

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

  2. Potato + peppertop 9% of all pairs
    Smell alikemoderate
    Cooked together8,305 recipes

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

  3. Potato + milktop 9% of all pairs
    Smell alikemoderate
    Cooked together3,611 recipes

    Shared aroma: (e,z)-2,6-nonadienal (cucumber, melon).

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

    Shared aroma: isobutyraldehyde (malty, green).

  5. Potato + buttertop 13% of all pairs
    Smell alikemoderate
    Cooked together6,456 recipes

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

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

Raw potatoes
Form the bulk of the dish and become tender as they cook in the milk.
Butter
Adds richness and fat, carrying flavor through the layers as it melts.
Flour
Lightly dusted between layers, it helps thicken the milk into a creamy sauce.
Milk
Cooks around the potatoes to form the creamy sauce that binds the dish.

The step that matters

Covering with a plate at first. Starting covered traps steam so the potatoes cook through gently before the top browns. Slow heat keeps the milk from scorching or curdling.

Swap the potato

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

  1. Potatothe original
  2. Capsicumfits about as well
  3. Chivefits less well
  4. Shallotfits less well

Fit is the average pairing score against pepper, butter, flour, 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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