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Duchess Potatoes

A buttery potato side dish with parsley, served hot.

From an old cookbook · modernised transcription
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Why it works: Pepper and parsley match in chemistry and in kitchens. They rank in the top 2% of all ingredient pairs, and cooks put them together in 34,122 recipes. Both carry 4'-methylacetophenone, which smells bitter almond. The science ↓

Duchess Potatoes

Oven, in the book's wordsA quick oven

Ingredients

Directions

Prepare

  1. Melt the butter in a frying pan.

  2. Add the chopped onion and fry until pale straw-colored.

  3. Slice the cooked potatoes and season with salt and pepper.

Cook and serve

  1. Add the seasoned potatoes to the pan and heat through.

  2. Stir in the chopped parsley and cook for 2 minutes.

  3. Serve very hot.

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. Pepper + parsleytop 2% of all pairs
    Smell alikestrong
    Cooked together34,122 recipes

    Shared aroma: 4'-methylacetophenone (bitter almond).

  2. Potato + parsleytop 5% of all pairs
    Smell alikemoderate
    Cooked together2,855 recipes

    Shared aroma: 4'-methylacetophenone (bitter almond).

  3. Pepper + potatotop 9% of all pairs
    Smell alikemoderate
    Cooked together8,305 recipes

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

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

    Shared aroma: isobutyraldehyde (malty, green).

  5. Flour + parsleytop 12% of all pairs
    Smell alikemoderate
    Cooked together16,675 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

Potatoes
Provides the starchy bulk and soft, fluffy body of the dish.
Butter
Adds fat for richness and flavor, and helps the potatoes stay moist.

Swap the potato

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

  1. Shallotfits better
  2. Carrotfits better
  3. Chivefits better
  4. Potatothe original

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