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Lyonnaise Potatoes

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

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 5 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

Prepare

  1. Season the diced potatoes with salt and pepper.

Cook

  1. In a skillet, brown the minced onion lightly in the clarified butter.

  2. Add the seasoned potatoes and minced parsley to the skillet.

  3. Cook until the potatoes are nicely browned, being careful not to break them.

  4. 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, browning on their cut surfaces as they cook.
Clarified butter
Conducts heat for browning and adds rich flavor without milk solids that would scorch.
Minced onion
Softens and lightly browns in the butter, adding savory sweetness.

The step that matters

Cook until the potatoes are nicely browned, without breaking them. Browning needs direct contact with the hot fat and enough undisturbed time to form a crust. Stirring too often or too roughly breaks the potatoes and releases starch, so the dish turns mushy instead of crisp at the edges.

Swap the onion

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

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

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