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Potato Lyonnaise

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

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 6 ingredients
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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 ↓

Potato Lyonnaise

Ingredients

Directions

  1. In a skillet, melt butter over medium heat.

  2. Add diced potatoes and minced onion, frying until golden.

  3. Season with coarse sea salt and black pepper.

  4. Sprinkle with chopped parsley before serving.

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 + 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 crisps and browns in the hot butter.
Minced onion
Adds sweetness and savory depth as it softens and browns alongside the potatoes.
Butter
Conducts heat evenly and adds richness, helping the potatoes brown in the skillet.

The step that matters

Frying until golden. Cold boiled potatoes need enough time in hot fat for the surface to brown and crisp. Stirring too often or crowding the pan steams them instead, leaving them soft and pale.

Swap the onion

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

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

Fit is the average pairing score against potato, butter, 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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