Name: Rhubarb and Orange Jam
Ingredients: 4 cups rhubarb, washed, scraped, and sliced; 2 cups sugar; rind and pulp of 3 oranges, pith and seeds discarded

Why it works: Rhubarb and orange work together. They rank in the top 5% of all ingredient pairs, and cooks put them together in 299 recipes. Both carry 2-methoxy-4-vinylphenol, which smells clove, smoky. The science ↓

Rhubarb and Orange Jam

Ingredients

4 cups rhubarb, washed, scraped, and sliced
2 cups sugar
rind and pulp of 3 oranges, pith and seeds discarded

Directions

In a pot, combine the rhubarb, sugar, and the rind and pulp of the oranges.
Cook slowly over low heat for 1 hour, stirring occasionally.
Pour the jam into jars and seal.

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.

Rhubarb + orangetop 5% of all pairs

Smell alikemoderate

Cooked together299 recipes

Shared aroma: 2-methoxy-4-vinylphenol (clove, smoky).
Rhubarb + sugartop 18% of all pairs

Smell alikemoderate

Cooked together1,852 recipes

Shared aroma: 1-penten-3-one (fish, pungent).
Sugar + orangetop 20% of all pairs

Smell alikelow

Cooked together19,212 recipes

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

Sugar and orange 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

Rhubarb: Provides the tart flavour and pectin-rich body that thickens the jam as it cooks.
Sugar: Sweetens the jam and helps it set into a spreadable texture while preserving it.
Oranges: Add citrus aroma and acidity from the rind and pulp, balancing the sweetness of the jam.

The step that matters

Cooking slowly over low heat. Gentle, long cooking with occasional stirring lets the rhubarb break down and the liquid reduce evenly without scorching the sugar. Too much heat can burn the bottom of the pot before the jam thickens.

Swap the orange

How well each one fits the dish's main ingredients (rhubarb, sugar):

Vanillafits better
Figfits about as well
Quincefits about as well
Orangethe original

Fit is the average pairing score against rhubarb, sugar. 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.

Orange Bundt Cake349 recipes

Rhubarb Pie152 recipes

Orange Cream Rice Pudding121 recipes

Orange Gelatin100 recipes

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Rhubarb and Orange Jam