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Lyonnaise Potatoes

A sautéed potato dish with butter, onions, parsley, salt, and pepper.

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

Lyonnaise Potatoes

Ingredients

Directions

  1. Season the diced potatoes with salt and pepper.

  2. Melt the butter in a skillet and fry the chopped onions until they turn yellow.

  3. Add the seasoned potatoes to the skillet and stir gently with a fork to avoid breaking them.

  4. Once heated through, add the chopped parsley and cook for 2 more minutes.

  5. Serve immediately on a hot dish.

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. Parsley + peppertop 2% of all pairs
    Smell alikestrong
    Cooked together34,122 recipes

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

  2. Potato + oniontop 3% of all pairs
    Smell alikemoderate
    Cooked together9,023 recipes

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

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

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

  4. Onion + parsleytop 9% of all pairs
    Smell alikemoderate
    Cooked together25,843 recipes

    Shared aroma: 2,4-decadienal (seaweed).

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

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

Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs

What each ingredient does

Cold boiled potatoes
Provide the main body of the dish, and their starch browns in the hot butter for a crisp edge.
Butter
Conducts heat evenly and adds richness and golden browning to the potatoes.
Onion
Softens and turns yellow in the butter, adding sweetness and aroma to the potatoes.

The step that matters

Stirring the potatoes gently. Potatoes that are fried and stirred roughly break apart and turn mushy. Gentle folding with a fork keeps the pieces intact so they can brown on their surfaces.

Swap the onion

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

  1. Carrotfits better
  2. Chivefits better
  3. Capsicumfits better
  4. Onionthe original

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