Why it works: Onion and pepper are a kitchen classic. They rank in the top 11% of all ingredient pairs, and 68,474 recipes mention both. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓
Egg Soup
Ingredients
Directions
Make the soup base
Boil the sago, stock, and onion together until the sago is clear, then remove the onion.
Season the soup with salt and pepper.
Thicken with egg yolks
Beat the egg yolks in a bowl.
Pour the boiling milk over the beaten yolks.
Strain the mixture into the stock.
Heat the mixture over the fire.
Whisk until it reaches boiling point, but do not let it boil.
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 aroma chemistry they share, and how many recipes mention both.
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Onion + peppertop 11% of all pairsAroma overlapmoderateMentioned together68,474 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Milk + eggtop 18% of all pairsAroma overlapmoderateMentioned together88,785 recipes
Shared aroma: 2-nonenal (fatty, green).
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Milk + oniontop 20% of all pairsAroma overlapmoderateMentioned together13,418 recipes
Shared aroma: hexanal (green, grassy).
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Milk + peppertop 22% of all pairsAroma overlapmoderateMentioned together26,984 recipes
Shared aroma: ethyl 2-methylbutyrate (fruity, apple).
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Egg + peppertop 33% of all pairsAroma overlaplowMentioned together50,580 recipes
Shared aroma: 2-nonenal (fatty, green).
Egg and pepper share little aroma chemistry, yet 50,580 recipes mention both: they likely 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
- Egg yolks
- Coagulate when heated, thickening the soup and giving it a smooth, rich body.
- Sago
- Its starch swells and thickens the liquid as it cooks, and turns clear when fully cooked.
- Milk
- Adds creaminess and richness, and softens the flavour of the soup.
- White stock
- Forms the main liquid base, carrying the flavour of the whole soup.
The step that matters
Whisking the yolks into the hot liquid without boiling. Egg yolk proteins set when heated. If the mixture gets too hot or boils, the yolks scramble and curdle, leaving a grainy soup instead of a smooth, lightly thickened one.
Flavor stand-ins for the onion
How well each one fits the dish's main ingredients (milk, egg, pepper):
- Capsicumbetter flavor fit
- Potatobetter flavor fit
- Asparagusbetter flavor fit
- Onionthe original
Fit is the average pairing score against milk, egg, pepper. Candidates are from the same food group and used in at least 100 recipes. This compares flavor only: it does not check the job the ingredient does in the dish (bulk, moisture, acidity, structure).
“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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