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 ↓
French Eclairs with Hot Chocolate Sauce
Ingredients
Directions
The book says “a moderate oven”. The 350°F (175°C) in the steps is the modern equivalent, not the book's own figure.
Make the choux dough
In a saucepan, combine boiling water and butter; bring to a boil.
Add flour all at once and stir vigorously until combined.
Remove from heat and add eggs one at a time, beating thoroughly after each addition.
Bake and fill
Drop spoonfuls of the mixture onto a buttered baking pan, shaping them into eclair forms.
Bake in a moderate oven at 350°F (175°C) for 20 to 30 minutes.
Cool the eclairs, then split and fill with whipped cream.
Serve with hot chocolate sauce.
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).
-
Butter + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Flour + vanillatop 12% of all pairsSmell alikemoderateCooked together19,241 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Butter + vanillatop 14% of all pairsSmell alikemoderateCooked together20,050 recipes
Shared aroma: guaiacol (smoky, sweet).
-
Cream + vanillatop 15% of all pairsSmell alikelowCooked together12,301 recipes
Shared aroma: 2-nonanone (fruity, floral).
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
- Butter
- Melts into the boiling water to add fat and richness to the dough.
- Flour
- Its starch gelatinises with heat and water, giving the dough structure to hold its shape.
- Eggs
- Add moisture and proteins that set during baking, helping the eclairs puff and hold their hollow centre.
The step that matters
Beating in the eggs one at a time. Each egg must be fully absorbed before the next is added. Too much egg at once makes the dough runny, so it will not hold its shape or puff properly in the oven.
Swap the vanilla
How well each one fits the dish's main ingredients (butter, flour, egg, cream):
- Raisinfits about as well
- Vanillathe original
- Coconutfits less well
- Strawberryfits less well
Fit is the average pairing score against butter, flour, egg, cream. 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
Vanilla Ice Cream108 recipes
White Cake431 recipes
Pound Cake373 recipes
Orange Bundt Cake349 recipesThe 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.