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Dessert

Lemon Water Icing

A simple lemon icing made with icing sugar, water, lemon juice, and saffron.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 4 ingredients
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Why it works: Lemon and saffron match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 538 recipes. Both carry eucalyptol, which smells eucalyptus, herbal. The science ↓

Lemon Water Icing

Ingredients

Directions

Make the icing

  1. Combine icing sugar, water, lemon juice, and saffron in a small saucepan.

  2. Stir over low heat until the mixture reaches a thick cream consistency; do not let it boil.

Finish and reuse

  1. Pour the icing over the cake immediately after removing it from the heat.

  2. Reheat any leftover icing to use again.

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. Lemon + saffrontop 1% of all pairs
    Smell alikestrong
    Cooked together538 recipes

    Shared aroma: eucalyptol (eucalyptus, herbal).

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

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

  3. Sugar + saffrontop 30% of all pairs
    Smell alikelow
    Cooked together650 recipes

    Shared aroma: 1-penten-3-one (fish, pungent).

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

Icing sugar
Provides sweetness and bulk, forming the body of the icing.
Water
Dissolves the sugar and sets the thickness of the icing when warmed.
Lemon juice
Adds acidity that brightens the sweetness of the icing.

The step that matters

Stir over low heat without boiling. Icing sugar dissolves smoothly over gentle heat, but boiling can make the icing grainy or cause it to set too stiff once it cools. Stopping at a thick cream consistency keeps it pourable and glossy.

Swap the saffron

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

  1. Cinnamonfits better
  2. Gingerfits better
  3. Marjoramfits about as well
  4. Saffronthe original

Fit is the average pairing score against sugar, 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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