Name: Peach Leather
Ingredients: Peaches (as many as you choose); ¼ cup sugar for every 1 cup of peaches; Butter (for greasing)

Why it works: Peach and butter work together. They rank in the top 14% of all ingredient pairs, and cooks put them together in 860 recipes. Both carry 2,6-nonadienal, which smells cucumber, green. The science ↓

Peach Leather

Ingredients

Peaches (as many as you choose)
¼ cup sugar for every 1 cup of peaches
Butter (for greasing)

Directions

Prepare the purée

Stew the peaches until soft.
Add ¼ cup sugar for every 1 cup of peaches and mash until smooth.
Cook until the mixture is dry enough to spread.

Dry and store

Grease a board with butter and spread the mixture in a thin sheet.
Set the sheet out in the sun to dry.
Once dry, roll it up like leather and wrap in a cloth.

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.

Peach + buttertop 14% of all pairs

Smell alikemoderate

Cooked together860 recipes

Shared aroma: 2,6-nonadienal (cucumber, green).
Sugar + buttertop 17% of all pairs

Smell alikemoderate

Cooked together98,233 recipes

Shared aroma: guaiacol (smoky, sweet).
Peach + sugartop 17% of all pairs

Smell alikelow

Cooked together2,308 recipes

Shared aroma: beta-damascenone (apple, rose).

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

What each ingredient does

Peaches: Provide the fruit base, bulk, and natural flavour of the leather.
Sugar: Adds sweetness and helps the finished leather stay pliable and preserve well.

The step that matters

Cook until the mixture is dry enough to spread. Cooking drives off water and concentrates the sugar and fruit pectin. If the purée is too wet, it dries slowly in the sun and may spoil; if overcooked, it becomes stiff and brittle instead of flexible.