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Dessert

Water Eggs

A lemon custard made by boiling sugar, lemon rind, and juice, then baking beaten eggs with the sweetened liquid.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 4 ingredients
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Why it works: Sugar and lemon are a kitchen classic. They rank in the top 18% of all ingredient pairs, and cooks put them together in 53,532 recipes. Both carry 2-nonenal, which smells fatty, green. The science ↓

Water Eggs

Oven, in the book's wordsA moderately hot oven

Ingredients

Directions

The book says “a moderately hot oven”. The 350°F (175°C) in the steps is the modern equivalent, not the book's own figure.

Make the lemon syrup

  1. Boil the sugar, lemon rind, and juice in ½ pint of water for 15 minutes.

Make the custard

  1. Beat the eggs well and add the sweetened water.

  2. Strain the mixture through a sieve into the serving dish.

  3. Place the dish in a larger dish with boiling water.

Bake and serve

  1. Bake in a moderate oven at 350°F (175°C) until set.

  2. Serve hot or cold.

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. Sugar + lemontop 18% of all pairs
    Smell alikelow
    Cooked together53,532 recipes

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

  2. Egg + lemontop 19% of all pairs
    Smell alikelow
    Cooked together44,316 recipes

    Shared aroma: (e,e)-2,4-decadienal (fatty, deep fried).

  3. Egg + sugartop 21% of all pairs
    Smell alikemoderate
    Cooked together122,807 recipes

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

Sugar and lemon barely smell alike, yet cooks put them together in 53,532 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

Eggs
Their proteins set as they heat, giving the custard a soft but firm body.
Sugar
Sweetens the custard and balances the sharpness of the lemon.
Lemons
Supply sharp acidity and aromatic oils from the rind for flavour.

The step that matters

Baking until just set. Egg proteins set gently with moderate, indirect heat from the water bath. If the custard gets too hot or bakes too long, the proteins tighten and squeeze out liquid, leaving it grainy or watery. Remove it once it is just set.

Swap the lemon

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

  1. Vanillafits better
  2. Raisinfits about as well
  3. Lemonthe original
  4. Datesfits less well

Fit is the average pairing score against egg, sugar. 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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