Why it works: Butter and cream are a kitchen classic. They rank in the top 8% of all ingredient pairs, and cooks put them together in 41,516 recipes. Both carry delta-dodecalactone, which smells sweet, creamy. The science ↓
Hard Egg Curry
Ingredients
Directions
Make the curry base
Fry the sliced onions in butter until tender.
Add curry powder and broth; let it stew until the onions are soft.
Thicken and finish
Mix cream with arrowroot or rice flour to thicken.
Simmer for a few minutes, then add the sliced hard-boiled eggs.
Heat the eggs thoroughly without boiling.
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.
-
Butter + creamtop 8% of all pairsSmell alikemoderateCooked together41,516 recipes
Shared aroma: delta-dodecalactone (sweet, creamy).
-
Onion + arrowroottop 11% of all pairsSmell alikestrongCooked together340 recipes
Shared aroma: coumarin (sweet, hay).
-
Onion + buttertop 15% of all pairsSmell alikemoderateCooked together42,912 recipes
Shared aroma: decanal (soap, orange peel).
-
Butter + eggtop 17% of all pairsSmell alikemoderateCooked together118,967 recipes
Shared aroma: decanal (soap, orange peel).
-
Onion + creamtop 18% of all pairsSmell alikelowCooked together10,827 recipes
Shared aroma: 2-nonanone (fruity, floral).
Onion and cream barely smell alike, yet cooks put them together in 10,827 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
- Onions
- Soften and sweeten as they cook down, forming the body of the curry.
- Curry powder
- Provides the warm, aromatic spice flavour that defines the dish.
- Cream
- Adds richness and a smooth, creamy texture to the sauce.
- Arrowroot or rice flour
- Thickens the cream into the sauce without making it cloudy or gluey.
- Hard-boiled eggs
- Add protein-rich body and a mild, tender texture to the curry.
The step that matters
Heat the eggs thoroughly without boiling. Boiling a cream-based sauce can cause it to separate or curdle, and it can toughen the egg whites. Gentle heat warms the eggs through while keeping the sauce smooth.
Swap the arrowroot
How well each one fits the dish's main ingredients (onion, butter, cream, egg):
- Potatofits better
- Leekfits better
- Chivefits better
- Arrowrootthe original
Fit is the average pairing score against onion, butter, cream, egg. Candidates are from the same food group and used in at least 100 recipes.
“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.
You might also like
The free Flavor Lab newsletter: one surprising pairing a week and the molecular reason it works, in 60 seconds. No spam, unsubscribe anytime.
Prefer an account? Create a free account to save pairings and unlock the full chemistry.
Arrowroot Gruel37 recipes
Tomato Soup526 recipes
Brown Bread461 recipes
Mutton Broth292 recipes