Why it works: Milk and butter are a kitchen classic. They rank in the top 7% of all ingredient pairs, and cooks put them together in 81,283 recipes. Both carry (z)-4-heptenal, which smells biscuit, cream. The science ↓
Walnut Croquettes
Ingredients
Directions
Make the custard
Heat 2 cups of milk in a saucepan.
Add ½ cup sugar, 2 tablespoons flour, 2 tablespoons corn starch, 2 eggs, and ¼ teaspoon salt.
Wet the mixture with ¼ cup milk and stir until thick.
Remove from heat and add 2 tablespoons butter, 2 tablespoons broken walnut meats, and ½ teaspoon vanilla extract.
Pour the mixture into a square cake pan and let it cool.
Coat and fry
Once cool, cut into 16 squares.
Wrap each square in egg and cracker crumbs.
Fry in deep lard or oil until golden brown.
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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Milk + buttertop 7% of all pairsSmell alikemoderateCooked together81,283 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
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Corn + walnuttop 9% of all pairsSmell alikestrongCooked together349 recipes
Shared aroma: 2-nonenal (fatty, green).
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Milk + corntop 10% of all pairsSmell alikemoderateCooked together6,955 recipes
Shared aroma: hexanal (green, grassy).
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Flour + buttertop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Flour + walnuttop 12% of all pairsSmell alikemoderateCooked together5,873 recipes
Shared aroma: isobutyraldehyde (malty, green).
Flour and butter 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
- Bind the thickened mixture and help it set firm enough to cut and coat.
- Flour
- Thickens the milk mixture so it sets firm enough to cut into squares.
- Corn starch
- Thickens the milk mixture, giving a smooth, firm set when cooled.
- Sugar
- Adds sweetness and helps the croquettes brown when fried.
- Butter
- Adds richness and a softer, smoother texture to the filling.
- Milk
- Forms the liquid base that thickens into the custard.
The step that matters
Let the mixture cool fully before cutting. The starch and flour must set as the custard cools; cutting while warm causes soft, misshapen squares that fall apart when coated and fried.
Swap the walnut
How well each one fits the dish's main ingredients (milk, sugar, flour, corn, egg, butter, meat):
- Almondfits better
- Walnutthe original
- Peanutfits about as well
- Beansfits about as well
Fit is the average pairing score against milk, sugar, flour, corn, egg, butter, meat. 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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