Why it works: Butter and flour are a kitchen classic. They rank in the top 12% of all ingredient pairs, and cooks put them together in 124,287 recipes. Both carry isobutyraldehyde, which smells malty, green. The science ↓
Egg Balls for Soup
Ingredients
Directions
Make the dough
Rub the yolks of the hard boiled eggs with the butter, pepper, and salt until smooth.
Add the raw egg and mix well.
Incorporate enough flour to form a paste that holds together.
Shape and serve
Shape the mixture into small balls using floured hands.
Set the balls aside in a cool place until ready to serve.
Just before serving the soup, boil the egg balls for one minute.
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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Butter + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Egg + flourtop 15% of all pairsSmell alikelowCooked together106,462 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Egg + buttertop 17% of all pairsSmell alikemoderateCooked together118,967 recipes
Shared aroma: decanal (soap, orange peel).
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Pepper + flourtop 19% of all pairsSmell alikemoderateCooked together50,459 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Butter + peppertop 21% of all pairsSmell alikemoderateCooked together85,593 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
Butter and flour barely smell alike, yet cooks put them together in 124,287 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
- Hard boiled eggs
- Their mashed yolks form the body of the paste.
- Raw egg
- Binds the mixture so the balls hold their shape.
- Butter
- Adds fat for a smoother, richer texture.
- Flour
- Stiffens the paste so it holds together when shaped.
The step that matters
Adding the flour. Too much flour makes the balls dense and dry, while too little leaves them too soft to hold their shape in the soup. Add it gradually until the paste just holds together.
“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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