Why it works: Sugar and egg are a kitchen classic. They rank in the top 21% of all ingredient pairs, and cooks put them together in 122,807 recipes. Both carry 2-nonenal, which smells fatty, green. The science ↓
Boiled Icing
Ingredients
Directions
Make the syrup
In a saucepan, combine the sugar and cold water.
Boil until the mixture thickens and drops in fine threads from a spoon.
Whip and finish
While boiling, beat the egg white to a stiff froth.
Gradually pour the hot sugar mixture into the egg white, beating continuously until the icing is white and smooth.
Apply the icing to the cake.
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.
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Sugar + eggtop 21% of all pairsSmell alikemoderateCooked together122,807 recipes
Shared aroma: 2-nonenal (fatty, green).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- White sugar
- Forms the sweet syrup that sets into the icing structure as it cools.
- Egg white
- Whipped into a foam that gives the icing its light, airy, white texture.
The step that matters
Pouring the hot syrup into the egg white. Pour the syrup slowly while beating constantly. Adding it too fast can cook or deflate the foam unevenly, leaving the icing lumpy instead of smooth and white.
“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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