Name: Orange Marmalade
Ingredients: 1 gallon orange peel; 1 gallon orange juice; 12 pounds granulated sugar

Why it works: Orange and sugar are a kitchen classic. They rank in the top 20% of all ingredient pairs, and cooks put them together in 19,212 recipes. Both carry beta-damascenone, which smells apple, rose. The science ↓

Orange Marmalade

Ingredients

1 gallon orange peel
1 gallon orange juice
12 pounds granulated sugar

Directions

Prepare the peel

Peel the oranges, removing as much of the white inner skin as possible.
Cut the peel into strings about the size of a wheat straw and soak in cold water for 24 hours.
Blanch the peel as you would for orange preserves.
Chop the oranges and press out the juice, but only after the peel is ready.

Cook the marmalade

Combine the orange peel, orange juice, and sugar in a pot.
Cook the mixture until it reaches 220°F (104°C).
Process for 30 minutes at 170°F (77°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.

Orange + sugartop 20% of all pairs

Smell alikelow

Cooked together19,212 recipes

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

Orange and sugar barely smell alike, yet cooks put them together in 19,212 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

Orange peel: Provides the bitter, chewy texture and much of the characteristic marmalade flavor.
Orange juice: Adds liquid and acidity that bring the citrus flavor and help the mixture set.
Granulated sugar: Sweetens the marmalade and helps it gel and keep its texture.

The step that matters

Cook the mixture until it reaches 220°F (104°C). Sugar and pectin set into a gel only at the right concentration, which is roughly reached near this temperature. Stopping too early leaves the marmalade runny, while cooking too long makes it stiff and sugary.

“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.