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Rhubarb and Orange Marmalade

A preserved fruit spread made from sliced oranges, rhubarb, and sugar.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 3 ingredients
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Why it works: Orange and rhubarb 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 Marmalade

Ingredients

Directions

Prepare

  1. Slice the oranges very thin and cut the rhubarb into 1-inch pieces, leaving the skins on.

  2. Mix the sliced oranges and rhubarb together.

  3. Measure the mixture and add an equal amount of sugar, then mix thoroughly.

  4. Let it stand for 3 to 4 hours or overnight.

Cook

  1. Boil the mixture rapidly until a small amount on ice thickens like jelly.

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.

  1. Orange + rhubarbtop 5% of all pairs
    Smell alikemoderate
    Cooked together299 recipes

    Shared aroma: 2-methoxy-4-vinylphenol (clove, smoky).

  2. Rhubarb + sugartop 18% of all pairs
    Smell alikemoderate
    Cooked together1,852 recipes

    Shared aroma: 1-penten-3-one (fish, pungent).

  3. 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

Oranges
Add bitter peel and acidity that give the marmalade its aroma and bright flavour.
Rhubarb
Adds tartness and body, and its pectin helps the marmalade set.
Sugar
Sweetens the fruit and, once boiled, helps the mixture thicken and set into a jelly.

The step that matters

Boil rapidly until the jelly test sets. Pectin and sugar set only when the mixture reaches the right concentration at a hot boil. Undercooking leaves a runny marmalade, while overcooking can make it stiff and dark. Testing a small amount on ice shows when it has reached a gel point.

Swap the orange

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

  1. Vanillafits better
  2. Figfits about as well
  3. Quincefits about as well
  4. 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.

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