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 ↓
Cake
Ingredients
Directions
The book says “a hot oven”. The 400°F (200°C) in the steps is the modern equivalent, not the book's own figure.
Make the dough
Boil the water in a small kettle.
Once boiling, add the butter and flour, stirring briskly for a moment.
Remove from heat and let the mixture cool completely.
Beat the eggs thoroughly, then stir them into the cooled mixture one spoonful at a time until smooth.
Bake
Drop small, pear-shaped portions onto a greased baking sheet.
Bake in a hot oven at 400°F (200°C) for 30 minutes.
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 + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Flour + eggtop 15% of all pairsSmell alikelowCooked together106,462 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Butter + eggtop 17% of all pairsSmell alikemoderateCooked together118,967 recipes
Shared aroma: decanal (soap, orange peel).
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
- Adds fat that enriches the dough and adds tenderness to the baked cake.
- Flour
- Forms the starch structure that gives the dough body and holds the cake's shape.
- Eggs
- Add structure as they set in the oven and moisture that helps the cake puff.
- Water
- Boiled with the butter to form the liquid base that cooks the flour and creates steam for lift.
The step that matters
Cool the mixture completely before adding the eggs. If the mixture is still hot, the eggs can scramble or cook unevenly, and the dough may thin out too much, so it will not hold its shape in the oven.
“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.
More water sponge cake recipes
You might also like
White Cake431 recipes
Pound Cake373 recipes
Orange Bundt Cake349 recipes
Spice Cake344 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.