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 Frosting
Ingredients
Directions
Make the syrup
Place sugar in a glass pan and cover with enough cold water to dissolve.
Set the pan on the stove and cover while cooking.
Boil until the mixture threads, then remove from heat immediately.
Finish the frosting
Let the mixture cool slightly, then pour it over the beaten egg white and stir gently with a fork.
Transfer the mixture to a Dover egg beater, add flavoring to taste, and beat until smooth and spreadable.
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.
Photo for illustrative purposes only · Contact us to use it
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
- Granulated sugar
- Forms the syrup that sets into a sweet, smooth frosting when cooled and beaten.
- Egg white
- Whipped into a foam that gives the frosting its light, airy structure.
The step that matters
Removing the mixture from heat at the threading stage. Sugar syrup darkens and turns hard quickly once it passes the threading point, so it must come off the heat as soon as it reaches that stage. Overcooking makes the frosting brittle rather than smooth.
“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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