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Dessert

Common Lumon Tartlets

A small lemon custard tart baked in puff pastry.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 6 ingredients
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Why it works: Potato and lemon are a kitchen classic. They rank in the top 12% of all ingredient pairs, and cooks put them together in 2,230 recipes. Both carry 2-nonenal, which smells fatty, green. The science ↓

Common Lumon Tartlets

Oven, in the book's wordsA moderate oven

Ingredients

Directions

The book says “a moderate oven”. The 350°F in the steps is the modern equivalent, not the book's own figure.

Make the filling

  1. Beat the eggs until very light.

  2. Gradually add the sugar and whisk together for 5 minutes.

  3. Stir in the potato flour or common flour.

  4. Slowly add the lukewarm butter and mix well.

  5. Stir in the lemon juice and grated rind.

Fill and bake

  1. Line pattypans with the thin puff pastry.

  2. Fill the pattypans two-thirds full with the mixture.

  3. Bake in a moderate oven (350°F / 175°C) for about 20 minutes.

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. Potato + lemontop 12% of all pairs
    Smell alikemoderate
    Cooked together2,230 recipes

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

  2. Potato + buttertop 13% of all pairs
    Smell alikemoderate
    Cooked together6,456 recipes

    Shared aroma: (z)-4-heptenal (biscuit, cream).

  3. Butter + lemontop 16% of all pairs
    Smell alikemoderate
    Cooked together41,227 recipes

    Shared aroma: 3-hexenal (apple, fruity).

  4. Egg + buttertop 17% of all pairs
    Smell alikemoderate
    Cooked together118,967 recipes

    Shared aroma: decanal (soap, orange peel).

  5. Sugar + buttertop 17% of all pairs
    Smell alikemoderate
    Cooked together98,233 recipes

    Shared aroma: guaiacol (smoky, sweet).

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

What each ingredient does

Eggs
Whisked to a light foam, they give the tartlet filling its structure and set when baked.
Pounded sugar
Sweetens the filling and helps stabilise the beaten eggs while they are whisked.
Potato flour or common flour
Provides a little starch so the filling sets softly rather than running out.
Butter
Adds richness and a smooth, tender texture to the set custard.
Lemon juice and rind
Supply acidity and aroma, sharpening the sweet custard with lemon flavour.

The step that matters

Slowly add the lukewarm butter. Adding warm melted butter too quickly can deflate the whisked eggs and cause the fat to separate, so a smooth, stable filling depends on pouring it in slowly while mixing.

Swap the potato

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

  1. Asparagusfits better
  2. Leekfits better
  3. Shallotfits better
  4. Potatothe original

Fit is the average pairing score against egg, sugar, butter, lemon. 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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