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Dessert

Lemon Curd

A thick, sweet lemon spread made from butter, sugar, lemon rind and juice, and egg yolks.

From the Recipes Wiki (Fandom) · 4 ingredients
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Why it works: Butter and lemon are a kitchen classic. They rank in the top 16% of all ingredient pairs, and cooks put them together in 41,227 recipes. Both carry 3-hexenal, which smells apple, fruity. The science ↓

Lemon Curd

Ingredients

Directions

Make the curd

  1. Put butter cut into small pieces, sugar, and beaten eggs (yolks of 6 and whites of 4) into a large heavy-based pan.

  2. Add the rind and juice of the lemons.

  3. Stir continuously with a wooden spoon and heat until boiling.

  4. Ensure the mixture reaches jam heat (use a jam thermometer if available).

Jar and store

  1. While the mixture boils, place jars in a warm oven to sterilise them and prevent cracking.

  2. Once boiling, remove the pan from heat and pour the curd into the sterilised jars.

  3. Seal immediately with jam pot covers and elastic bands.

  4. If stored in the fridge, the curd can last for years.

Nutrition, whole recipe (rough)

241Calories
7 gProtein
17 gFat
17 gCarbs
What these numbers assume: 4 portions
IngredientPortion assumedkcal
Butter1 tbsp (14g)102
Egg1 large egg (50g)78
Sugar1 tbsp (12.5g) granulated49
Lemonjuice of 1 lemon (48ml)12

One typical portion per ingredient; the recipe's quantities are not counted. A rough guide only, not for medical or dietary planning.

Recipe from the Recipes Wiki (Fandom).

Steps grouped into stages for easier reading; the method is the source's own.

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

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

  2. Butter + eggtop 17% of all pairs
    Smell alikemoderate
    Cooked together118,967 recipes

    Shared aroma: decanal (soap, orange peel).

  3. Butter + sugartop 17% of all pairs
    Smell alikemoderate
    Cooked together98,233 recipes

    Shared aroma: guaiacol (smoky, sweet).

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

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

  5. Lemon + eggtop 19% of all pairs
    Smell alikelow
    Cooked together44,316 recipes

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

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 thicken and set the curd as it heats.
Butter
Adds fat for a smooth, rich texture.
Sugar
Sweetens the curd and balances the sharp lemon flavour.
Lemons
The juice adds acidity and the rind adds fragrant aroma.

The step that matters

Stirring and heating the eggs. The eggs can scramble if the mixture overheats or is left unstirred. Stirring constantly over steady heat lets the proteins thicken the curd smoothly, and the mixture should reach jam heat without being rushed.

Swap the lemon

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

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

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