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Duchess Potatoes

A fried potato mixture with flour, milk, and eggs.

From an old cookbook · modernised transcription
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Why it works: Potato and milk are a kitchen classic. They rank in the top 9% of all ingredient pairs, and cooks put them together in 3,611 recipes. Both carry (e,z)-2,6-nonadienal, which smells cucumber, melon. The science ↓

Duchess Potatoes

Ingredients

Directions

Prepare the mixture

  1. Boil the potatoes until tender, then let them cool.

  2. Grate the cooled potatoes into a bowl.

  3. Gradually mix in the flour and milk.

  4. Add the eggs and mix until combined.

Fry and serve

  1. Drop spoonfuls of the mixture into boiling lard.

  2. Remove them when they are a delicate 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. Potato + milktop 9% of all pairs
    Smell alikemoderate
    Cooked together3,611 recipes

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

  2. Flour + milktop 14% of all pairs
    Smell alikelow
    Cooked together78,219 recipes

    Shared aroma: isobutyraldehyde (malty, green).

  3. Potato + flourtop 15% of all pairs
    Smell alikemoderate
    Cooked together5,355 recipes

    Shared aroma: isobutyraldehyde (malty, green).

  4. Flour + eggtop 15% of all pairs
    Smell alikelow
    Cooked together106,462 recipes

    Shared aroma: isobutyraldehyde (malty, green).

  5. Milk + eggtop 18% of all pairs
    Smell alikemoderate
    Cooked together88,785 recipes

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

Flour and milk barely smell alike, yet cooks put them together in 78,219 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

Potatoes
Provide the starchy bulk that gives the duchess potatoes their soft, tender interior.
Flour
Adds starch that thickens the mixture and helps it hold its shape when fried.
Eggs
Bind the mixture together and add richness and structure as they set.
Milk
Adds moisture that keeps the mixture soft and easy to shape.
Boiling lard
Conducts heat quickly to cook the mixture and browns its surface.

The step that matters

Remove them when they are a delicate brown. Browning comes from Maillard reactions and caramelising sugars at the surface. Frying too long darkens the outside quickly while the interior can dry out, so timing the removal matters.

Swap the potato

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

  1. Arrowrootfits better
  2. Asparagusfits about as well
  3. Chivefits about as well
  4. Potatothe original

Fit is the average pairing score against flour, milk, egg. 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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