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Sauce

Lemon Sauce

A white sauce flavored with lemon juice and parsley, optionally spiced with cayenne or paprika.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 4 ingredients
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Lemon Sauce

Why it works: Parsley and lemon match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 14,037 recipes. Both carry beta-phellandrene, which smells minty, terpene. The science ↓

Lemon Sauce

Ingredients

Directions

  1. Prepare a white sauce.

  2. After boiling, add the chopped parsley and lemon juice.

  3. Heat the sauce gently, but do not let it boil.

  4. For extra heat, add a pinch of cayenne or paprika pepper.

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.

Photo for illustrative purposes only · Contact us to use it

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 + lemontop 1% of all pairs
    Smell alikestrong
    Cooked together14,037 recipes

    Shared aroma: beta-phellandrene (minty, terpene).

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

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

  3. Lemon + peppertop 3% of all pairs
    Smell alikestrong
    Cooked together27,047 recipes

    Shared aroma: trans-2-nonenal (cardboard, fatty).

  4. Parsley + saucetop 23% of all pairs
    Smell alikelow
    Cooked together6,693 recipes

    Shared aroma: ethanol (alcoholic, ethereal).

  5. Sauce + peppertop 27% of all pairs
    Smell alikelow
    Cooked together15,303 recipes

    Shared aroma: ethanol (alcoholic, ethereal).

Sauce and pepper barely smell alike, yet cooks put them together in 15,303 recipes: they work on texture and structure more than aroma.

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

What each ingredient does

Parsley
Adds fresh, green aroma and a mild herbal flavour.
Lemon juice
Adds acidity that brightens the sauce and cuts its richness.
White sauce
Forms the creamy base that carries the other flavours and gives body.

The step that matters

Heat the sauce gently, without boiling. Boiling a white sauce containing dairy proteins can make it thicken unevenly or separate, and the acid from lemon juice increases the risk of curdling when hot. Prolonged high heat also dulls the fresh aroma of parsley, so keep the heat low and the sauce just warm.

Swap the lemon

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

  1. Lemonthe original
  2. Limefits about as well
  3. Avocadofits less well
  4. Mangofits less well

Fit is the average pairing score against parsley, sauce, 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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