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Dessert

Lemon Puffs

A lemon custard baked with egg yolks and milk, topped with icing.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 7 ingredients
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Why it works: Milk and flour are a kitchen classic. They rank in the top 14% of all ingredient pairs, and cooks put them together in 78,219 recipes. Both carry isobutyraldehyde, which smells malty, green. The science ↓

Lemon Puffs

Ingredients

Directions

The book gives no oven temperature. The 350°F (175°C) in the steps was added when the recipe was transcribed, as a starting point.

Prepare

  1. Preheat the oven to 350°F (175°C).

Make the custard

  1. Beat the egg yolks, flour, sugar, and grated lemon rind together until well combined, then add the lemon juice and mix well.

  2. When ready to bake, stir in the milk.

Ice and bake

  1. In a separate bowl, beat the egg whites until frothy, then add 1 teacup of sugar and flavoring.

  2. Pour the custard mixture into a baking dish and bake until set.

  3. Spread the icing over the baked custard and let it brown slowly in the oven.

  4. Allow to cool before serving.

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. Milk + flourtop 14% of all pairs
    Smell alikelow
    Cooked together78,219 recipes

    Shared aroma: isobutyraldehyde (malty, green).

  2. Sugar + flourtop 15% of all pairs
    Smell alikemoderate
    Cooked together92,116 recipes

    Shared aroma: phenylacetaldehyde (hawthorne, honey).

  3. Milk + lemontop 15% of all pairs
    Smell alikemoderate
    Cooked together19,053 recipes

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

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

    Shared aroma: isobutyraldehyde (malty, green).

  5. Flour + lemontop 17% of all pairs
    Smell alikemoderate
    Cooked together30,404 recipes

    Shared aroma: isobutyraldehyde (malty, green).

Milk and flour barely smell alike, yet cooks put them together in 78,219 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

Egg yolks
Set the custard and add richness and a smooth, tender texture.
Egg whites
Whipped into a foam that gives the icing lightness and lets it brown.
Flour
Thickens the custard so it holds its shape once set.
Sugar
Sweetens the custard and icing, and helps the icing brown.
Milk
Adds moisture and softness to the custard base.
Lemons
Provide acidity and bright aroma from the juice and rind.

The step that matters

Browning the icing slowly. The sugar and egg white icing browns through heat-driven Maillard and caramelization reactions. Too much heat or time scorches the top before the custard below is fully set.

Swap the lemon

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

  1. Vanillafits better
  2. Raisinfits better
  3. Figfits better
  4. Lemonthe original

Fit is the average pairing score against milk, egg, sugar, flour. 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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