Why it works: Flour and walnut are a kitchen classic. They rank in the top 12% of all ingredient pairs, and cooks put them together in 5,873 recipes. Both carry isobutyraldehyde, which smells malty, green. The science ↓
Walnut Wafers
Ingredients
Directions
The book says “a moderate oven”. The 400°F (200°C) in the steps is the modern equivalent, not the book's own figure.
Prepare
Preheat the oven to 400°F (200°C).
Make the batter
In a bowl, beat the eggs with a pinch of salt.
Add the brown sugar and mix well.
Stir in the baking powder and flour until combined.
Fold in the chopped walnuts.
Bake
Drop small teaspoonfuls of the mixture onto well-buttered pans, spacing them apart.
Bake in the hot oven until golden.
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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Flour + walnuttop 12% of all pairsSmell alikemoderateCooked together5,873 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Sugar + flourtop 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).
-
Egg + sugartop 21% of all pairsSmell alikemoderateCooked together122,807 recipes
Shared aroma: 2-nonenal (fatty, green).
-
Egg + walnuttop 23% of all pairsSmell alikemoderateCooked together6,037 recipes
Shared aroma: 2-nonenal (fatty, green).
Egg and flour barely smell alike, yet cooks put them together in 106,462 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
- Bind the batter and provide structure as they set, helping the wafers hold their shape.
- Brown sugar
- Adds sweetness and moisture, and promotes browning and a caramel flavor as the wafers bake.
- Baking powder
- Releases gas that lifts the batter slightly, giving the wafers a lighter texture.
- Flour
- Provides structure that holds the batter together as it sets in the oven.
- Walnuts
- Add fat, crunch and a toasted nutty aroma to the wafers.
The step that matters
Spacing the drops. Batter spreads as it bakes, so drops placed too close together can merge. Leaving room between teaspoonfuls lets each wafer spread thinly and brown evenly.
Swap the walnut
How well each one fits the dish's main ingredients (egg, sugar, flour):
- Almondfits better
- Chestnutfits better
- Milletfits better
- Walnutthe original
Fit is the average pairing score against egg, sugar, flour. 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.
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