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Salad

French Dressing

A vinaigrette made with olive oil, mustard, vinegar, sugar, salt, onion juice, and red pepper.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 7 ingredients
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Why it works: Mustard and onion match in chemistry and in kitchens. They rank in the top 6% of all ingredient pairs, and cooks put them together in 9,259 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓

French Dressing

Ingredients

Directions

  1. Mix the dry ingredients in a bowl.

  2. Stir in a little olive oil to form a smooth paste.

  3. Add the remaining olive oil and vinegar to the paste and mix well.

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. Mustard + oniontop 6% of all pairs
    Smell alikestrong
    Cooked together9,259 recipes

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

  2. Mustard + vinegartop 7% of all pairs
    Smell alikemoderate
    Cooked together14,067 recipes

    Shared aroma: isobutyraldehyde (malty, green).

  3. Olive + mustardtop 8% of all pairs
    Smell alikestrong
    Cooked together5,950 recipes

    Shared aroma: eucalyptol (eucalyptus, herbal).

  4. Olive + oniontop 8% of all pairs
    Smell alikemoderate
    Cooked together29,779 recipes

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

  5. Mustard + peppertop 9% of all pairs
    Smell alikemoderate
    Cooked together15,430 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

Olive oil
Provides the fat base, adding richness and carrying the flavors through the dressing.
Vinegar
Adds acidity and sharpness that balance the richness of the oil.
Mustard
Helps hold the oil and vinegar together so the dressing stays smoother and separates less.

The step that matters

Forming the smooth paste. Mixing the dry ingredients with a little oil first lets the seasonings and mustard disperse evenly. A concentrated paste emulsifies more readily, so adding the rest of the oil and vinegar all at once is less likely to leave lumps or a separated dressing.

Swap the onion

How well each one fits the dish's main ingredients (olive, mustard, vinegar, sugar, pepper):

  1. Capsicumfits better
  2. Horseradishfits better
  3. Lettucefits better
  4. Onionthe original

Fit is the average pairing score against olive, mustard, vinegar, sugar, 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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