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Lyonnaise Potatoes

Sautéed potatoes with onions, butter, sea salt, and white pepper.

From an old cookbook · modernised transcription
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Why it works: Potato and onion are a kitchen classic. They rank in the top 3% of all ingredient pairs, and cooks put them together in 9,023 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓

Lyonnaise Potatoes

Oven, in the book's wordsA quick oven

Ingredients

Directions

Prepare

  1. Peel and slice the potatoes into thin rounds.

  2. In a frying pan, melt the butter over medium heat.

Cook

  1. Add the sliced onion and cook until browned.

  2. Add the potato slices to the pan and sauté until golden and tender.

  3. Season with coarse sea salt and white pepper to taste.

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

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

  2. Potato + buttertop 13% of all pairs
    Smell alikemoderate
    Cooked together6,456 recipes

    Shared aroma: (z)-4-heptenal (biscuit, cream).

  3. Butter + oniontop 15% of all pairs
    Smell alikemoderate
    Cooked together42,912 recipes

    Shared aroma: decanal (soap, orange peel).

  4. Potato + white peppertop 20% of all pairs
    Smell alikelow
    Cooked together157 recipes

    Shared aroma: myrcene (balsamic, herbaceous).

  5. Butter + white peppertop 28% of all pairs
    Smell alikelow
    Cooked together3,814 recipes

    Shared aroma: eucalyptol (eucalyptus, herbal).

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

What each ingredient does

Potatoes
Form the bulk of the dish and turn tender while their starch helps them brown in the pan.
Butter
Adds fat for frying, carries flavour and helps the potatoes and onion brown.
Onion
Adds sweetness and savoury depth as it browns in the pan.

The step that matters

Sauté the potatoes until golden and tender. Thin slices need enough heat and space to brown without steaming. Crowding the pan or using low heat makes them soft and pale instead of golden.

Swap the white pepper

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

  1. Garlicfits better
  2. Thymefits better
  3. Parsleyfits better
  4. White pepperthe original

Fit is the average pairing score against potato, butter, onion. 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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