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Hard-Boiled Eggs in Croquettes

Hard-boiled eggs, mushrooms, and truffles are formed into croquettes, breaded, and fried.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 8 ingredients
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Why it works: Mushroom and truffle are a kitchen classic. They rank in the top 4% of all ingredient pairs, and cooks put them together in 1,900 recipes. Both carry 2,4-nonadienal, which smells fatty, green. The science ↓

Hard-Boiled Eggs in Croquettes

Oven, in the book's wordsA fierce oven

Ingredients

Directions

Prepare the filling

  1. Cut the hard-boiled eggs into small dice, separating the whites and yolks.

  2. In a bowl, combine the egg dice, cooked mushrooms, and truffles.

  3. Thicken the mixture with reduced white sauce.

  4. Spread the mixture on a dish to cool.

Shape and coat

  1. Divide the mixture into portions weighing about 1.5 ounces.

  2. Roll each portion into a ball.

  3. Shape each ball to resemble an egg.

  4. Dip each ball in beaten eggs.

  5. Roll each ball in breadcrumbs.

Fry and serve

  1. Fry the balls in hot oil for 4 minutes until golden brown.

  2. Drain the fried croquettes and serve.

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. Mushroom + truffletop 4% of all pairs
    Smell alikemoderate
    Cooked together1,900 recipes

    Shared aroma: 2,4-nonadienal (fatty, green).

  2. Egg + flourtop 15% of all pairs
    Smell alikelow
    Cooked together106,462 recipes

    Shared aroma: isobutyraldehyde (malty, green).

  3. Sauce + flourtop 18% of all pairs
    Smell alikemoderate
    Cooked together8,078 recipes

    Shared aroma: ethanol (alcoholic, ethereal).

  4. Egg + truffletop 18% of all pairs
    Smell alikemoderate
    Cooked together1,604 recipes

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

  5. Mushroom + flourtop 18% of all pairs
    Smell alikemoderate
    Cooked together8,253 recipes

    Shared aroma: isobutyraldehyde (malty, green).

Egg and flour barely smell alike, yet cooks put them together in 106,462 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

Hard-boiled eggs
Provide the main filling body, with diced whites and yolks giving the croquettes their texture.
Cooked mushrooms
Add moisture and savory, earthy flavor to the filling.
Truffles
Contribute a concentrated aroma that gives the filling its distinctive flavor.
Reduced white sauce
Thickens the mixture so it holds its shape when rolled and fried.
Beaten eggs
Act as a binder so the breadcrumbs adhere to the shaped balls.
Breadcrumbs
Form a crisp outer crust that browns during frying.

The step that matters

Cool the filling before shaping. A warm, loose filling will not hold its shape when rolled and may burst or leak oil during frying. Spreading it out to cool lets the thickened sauce set so each portion can be formed cleanly and coated evenly.

“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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