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Sauce for Cutlets, Croquettes, or Fish

A lemon‑flavored sauce made with eggs, milk, and parsley, used for cutlets, croquettes, or fish.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 6 ingredients
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Why it works: Lemon and parsley 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 ↓

Sauce for Cutlets, Croquettes, or Fish

Ingredients

Directions

Combine

  1. Beat the eggs with salt, pepper, and lemon juice.

  2. Add the mixture to the boiling milk.

Thicken and finish

  1. Stir in a pan of hot water until it thickens.

  2. Mix in the chopped parsley.

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. Lemon + parsleytop 1% of all pairs
    Smell alikestrong
    Cooked together14,037 recipes

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

  2. Pepper + parsleytop 2% of all pairs
    Smell alikestrong
    Cooked together34,122 recipes

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

  3. Pepper + lemontop 3% of all pairs
    Smell alikestrong
    Cooked together27,047 recipes

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

  4. Lemon + milktop 15% of all pairs
    Smell alikemoderate
    Cooked together19,053 recipes

    Shared aroma: 2-nonenal (fatty, green).

  5. Egg + milktop 18% of all pairs
    Smell alikemoderate
    Cooked together88,785 recipes

    Shared aroma: 2-nonenal (fatty, green).

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

What each ingredient does

Eggs
Their proteins set when heated, thickening the milk into a sauce.
Lemon juice
Adds acidity that brightens the sauce and balances its richness.
Milk
Forms the creamy liquid base that the egg mixture thickens.

The step that matters

Adding the egg mixture to the boiling milk. Egg proteins coagulate quickly at high heat, so they can scramble into lumps if the mixture meets very hot milk too abruptly. Adding it steadily while stirring spreads the heat and keeps the sauce smooth.

Swap the parsley

How well each one fits the dish's main ingredients (egg, pepper, lemon, milk):

  1. Parsleythe original
  2. Dillfits about as well
  3. Cardamomfits less well
  4. Marjoramfits less well

Fit is the average pairing score against egg, pepper, lemon, milk. 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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