Name: Nut Sandwiches
Ingredients: 1 cup finely ground peanuts; ½ tablespoon butter; 1 hard-boiled egg yolk; ½ teaspoon salt; 1 tablespoon lemon juice; 1 tablespoon cream or milk; 1 hard-boiled egg white, finely chopped; 1 cup finely chopped apples (optional); Thin slices of bread

Why it works: Butter and bread are a kitchen classic. They rank in the top 7% of all ingredient pairs, and cooks put them together in 27,232 recipes. Both carry delta-decalactone, which smells sweet, creamy. The science ↓

Nut Sandwiches

Ingredients

Directions

Make the filling

In a bowl, cream together the butter and egg yolk.
Stir in the salt, lemon juice, cream or milk, and chopped egg white.
If desired, add the finely chopped apples.

Assemble

Spread the mixture between thin slices of bread.

Recipe from a historical cookbook (Internet Archive).

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 + breadtop 7% of all pairs

Smell alikemoderate

Cooked together27,232 recipes

Shared aroma: delta-decalactone (sweet, creamy).
Butter + creamtop 8% of all pairs

Smell alikemoderate

Cooked together41,516 recipes

Shared aroma: delta-dodecalactone (sweet, creamy).
Egg + breadtop 13% of all pairs

Smell alikemoderate

Cooked together22,662 recipes

Shared aroma: (e)-2-octenal (fatty, green).
Apple + breadtop 14% of all pairs

Smell alikemoderate

Cooked together1,790 recipes

Shared aroma: 2,4-decadienal (seaweed).
Lemon + appletop 14% of all pairs

Smell alikemoderate

Cooked together7,551 recipes

Shared aroma: trans-2-nonenal (cardboard, fatty).

Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs

What each ingredient does

Finely ground peanuts: Provides the bulk, fat, and nutty flavor of the spread.
Butter: Adds fat and richness, softening the filling for a smooth spread.
Egg yolk: Its emulsifying fats help blend the butter into a smooth, stable filling.
Egg white: Adds body and a little structure to the spread.
Lemon juice: Adds acidity that brightens the rich, fatty filling.

Swap the apple

The recipe marks apple as optional. How well each one fits the dish's main ingredients (peanut, butter, egg, lemon, cream, bread):

Coconutfits better
Vanillafits better
Raspberryfits better
Applethe original

Fit is the average pairing score against peanut, butter, egg, lemon, cream, bread. 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.