Why it works: Walnut and butter match in chemistry and in kitchens. They rank in the top 7% of all ingredient pairs, and 6,819 recipes mention both. Both carry eucalyptol, which smells eucalyptus, herbal. The science ↓
The recipe
Approximately 7 dozen cookiesIngredients
Contains: egg, milk, wheat, tree nuts (auto-detected from the ingredients and method; we can miss things, so check labels)
Directions
Method written by CompKitchen from the ingredient list. Not the original author's method, not kitchen-tested.
Heat the oven to 350°F (175°C) and line two baking sheets with parchment paper.
Beat the 1 cup sugar, 1 cup shortening, egg and 1 teaspoon vanilla until smooth. Beat in the 1 cup milk.
In another bowl, whisk the 4½ cups flour, 4 teaspoons baking powder and ½ teaspoon salt. Mix into the wet ingredients until a soft dough forms, then chill for 30 minutes.
Finely chop the walnuts in a food processor. Put them in a saucepan with the melted butter, 1½ cups sugar and the 4 lightly beaten egg whites.
Cook the walnut filling over medium-low heat, stirring constantly, until thick and the egg whites reach 160°F (71°C). Let it cool completely.
Roll the chilled dough about ⅛ inch (3 mm) thick on a floured surface. Cut into 2-inch (5 cm) rounds, place about 1 teaspoon of filling on half of each round, and fold over to form pillows. Pinch the edges closed.
Arrange the cookies on the baking sheets and bake for 10 to 12 minutes, until the edges are light golden. Cool on a rack.
Stir the powdered sugar, 1 teaspoon vanilla and enough of the 4 tablespoons milk to make a thin icing. Drizzle over the cooled cookies and let it set.
Explore the science
The flavor team
The pairs that carry this dish. Each one is judged two ways: how much aroma chemistry they share, and how many recipes mention both.
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Walnut + buttertop 7% of all pairsAroma overlapstrongMentioned together6,819 recipes
Shared aroma: eucalyptol (eucalyptus, herbal).
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Vanilla + milktop 2% of all pairsAroma overlapmoderateMentioned together19,175 recipes
Shared aroma: ethyl caproate (fruity, apple peel).
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Milk + buttertop 3% of all pairsAroma overlapstrongMentioned together81,222 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
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Sugar + vanillatop 3% of all pairsAroma overlaplowMentioned together35,031 recipes
Shared aroma: beta-damascenone (apple, rose).
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Flour + buttertop 6% of all pairsAroma overlaplowMentioned together122,858 recipes
Shared aroma: isobutyraldehyde (malty, green).
Sugar and vanilla share little aroma chemistry, yet 35,031 recipes mention both: they likely work on texture and structure more than aroma.
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
The Sunday pairing: one pairing, the chemistry behind it, and how to cook it. No spam, unsubscribe anytime.
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