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 ↓
Geneva Wafers
Ingredients
Directions
The book says “a cool oven”. The 300°F in the steps is the modern equivalent, not the book's own figure.
Make the batter
Whisk the eggs in a bowl until well combined.
Stir in the softened butter until creamy.
Gradually add the flour and powdered sugar, mixing well.
Bake and shape
Butter a baking sheet and drop a teaspoonful of the mixture onto it, leaving space between each.
Bake in a cool oven (300°F / 150°C) until half done.
Roll the pieces up like wafers using a small wedge of bread or piece of wood to hold their shape.
Return to the oven until crisp.
Serve
Before serving, remove the bread and fill the widest end with a spoonful of preserve and whipped cream.
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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Flour + sugartop 15% of all pairsSmell alikemoderateCooked together92,116 recipes
Shared aroma: phenylacetaldehyde (hawthorne, honey).
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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).
-
Butter + sugartop 17% of all pairsSmell alikemoderateCooked together98,233 recipes
Shared aroma: guaiacol (smoky, sweet).
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
- Eggs
- Provide structure and bind the batter so the cookies hold together while baking.
- Butter
- Adds fat for richness and a tender, crisp texture.
- All-purpose flour
- Provides the structure that sets the thin wafers as they bake.
- Powdered sugar
- Adds sweetness and dissolves smoothly into the batter for a fine texture.
The step that matters
Rolling the half-baked pieces. The wafers must be rolled while still warm and pliable. As they cool they set and become brittle, so they can crack when rolled.
“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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