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 ↓
To Clarify Sugar for Sweets
Ingredients
Directions
Prepare
Combine 1 quart of water and the egg white in a brass preserving pan. Whisk until frothy.
Crush the loaf sugar and add it to the water and egg mixture.
Clarify
Slowly bring the mixture to a boil.
When it boils, add a little cold water.
Repeat the boiling and adding cold water each time it boils until you've used ½ pint of water.
When thick scum rises to the top, remove the pan from the heat.
Skim gently until the syrup is clear.
If not completely clear, add a little more water. Bring the mixture to a boil again.
Once clear, strain the syrup through a fine straining bag.
Store
Store the strained syrup in a jar. Heat as needed.
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
- Egg white
- Its proteins coagulate when heated and trap impurities, which rise as scum that can be skimmed off.
- Loaf sugar
- Forms the syrup itself, providing sweetness and body once dissolved in the water.
The step that matters
Skimming while the syrup is clear. Skimming too early or too roughly can leave cloudiness or break up the coagulated scum unevenly. Gentle skimming lifts the impurities cleanly, so the syrup clears instead of turning cloudy.
“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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