Name: Cracker Pie
Ingredients: 2 large Boston crackers, rolled fine; 2 cups hot water; 1½ cups sugar; 2 lemons, juice and grated rind; 2 eggs; a pinch of salt; nutmeg; small piece of butter

Why it works: Lemon and nutmeg match in chemistry and in kitchens. They rank in the top 5% of all ingredient pairs, and cooks put them together in 11,318 recipes. Both carry beta-phellandrene, which smells minty, terpene. The science ↓

Cracker Pie

Oven, in the book's wordsA moderate oven

Ingredients

Directions

The book says “a moderate oven”. The 350°F (175°C) in the steps is the modern equivalent, not the book's own figure.

Make the filling

Pour hot water over the rolled crackers.
Add sugar and beaten eggs.
Mix in salt, lemon juice, and grated nutmeg.

Assemble and bake

Line two pie plates with pastry.
Fill the plates with the mixture.
Dot with small pieces of butter before adding the top crust.
Bake for 30 minutes at 350°F (175°C).

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.

Lemon + nutmegtop 5% of all pairs

Smell alikestrong

Cooked together11,318 recipes

Shared aroma: beta-phellandrene (minty, terpene).
Nutmeg + buttertop 16% of all pairs

Smell alikemoderate

Cooked together24,377 recipes

Shared aroma: eucalyptol (eucalyptus, herbal).
Lemon + buttertop 16% of all pairs

Smell alikemoderate

Cooked together41,227 recipes

Shared aroma: 3-hexenal (apple, fruity).
Egg + buttertop 17% of all pairs

Smell alikemoderate

Cooked together118,967 recipes

Shared aroma: decanal (soap, orange peel).
Egg + nutmegtop 17% of all pairs

Smell alikelow

Cooked together24,744 recipes

Shared aroma: acetic acid (sour, vinegar).

Egg and nutmeg barely smell alike, yet cooks put them together in 24,744 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

Boston crackers: Soften in hot water and thicken the filling to form its body.
Eggs: Bind the filling and help it set as it bakes.
Sugar: Adds sweetness and helps give the filling its body.
Lemons: Add acidity and bright aroma from the juice and grated rind.