Why it works: Ginger and lemon match in chemistry and in kitchens. They rank in the top 5% of all ingredient pairs, and cooks put them together in 5,154 recipes. Both carry beta-phellandrene, which smells minty, terpene. The science ↓
Rhubarb Jam
Ingredients
Directions
Prepare
Remove the outer stringy part of the rhubarb and cut it into short lengths.
Weigh the rhubarb and place it in a preserving pan with sugar, ginger, and lemon rind.
Cook the jam
Heat the pan by the side of the fire and let the mixture come slowly to a boil, stirring occasionally.
Boil until the jam sets quickly when tested on a cold plate.
Pot and store
Pour the jam into pots, cover closely, and store in a cool, dry place.
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.
-
Ginger + lemontop 5% of all pairsSmell alikestrongCooked together5,154 recipes
Shared aroma: beta-phellandrene (minty, terpene).
-
Rhubarb + gingertop 7% of all pairsSmell alikemoderateCooked together241 recipes
Shared aroma: acetic acid (sour, vinegar).
-
Rhubarb + lemontop 7% of all pairsSmell alikestrongCooked together546 recipes
Shared aroma: acetic acid (sour, vinegar).
-
Sugar + gingertop 17% of all pairsSmell alikelowCooked together14,054 recipes
Shared aroma: 1-penten-3-one (fish, pungent).
-
Sugar + lemontop 18% of all pairsSmell alikelowCooked together53,532 recipes
Shared aroma: 2-nonenal (fatty, green).
Sugar and ginger barely smell alike, yet cooks put them together in 14,054 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 main bulk and tart flavour of the jam.
- Preserving sugar
- Sweetens the jam and helps it set and keep well.
- Ground ginger
- Adds warm, aromatic spice flavour to the jam.
The step that matters
Boiling until the jam sets. Pectin and sugar only gel when the mixture reaches a high enough concentration, so boiling too briefly leaves runny jam while boiling too long can make it dull or overly firm. Testing on a cold plate shows whether it is ready.
Swap the rhubarb
How well each one fits the dish's main ingredients (sugar, ginger, lemon):
- Cinnamonfits better
- Turmericfits better
- Corianderfits better
- Rhubarbthe original
Fit is the average pairing score against sugar, ginger, lemon. 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.
More rhubarb jam recipes
You might also like
Lemon Cake228 recipes
Ginger Cookies213 recipes
Rhubarb Pie152 recipes
Lemon Ice147 recipesThe free Flavor Lab newsletter: one surprising pairing a week and the molecular reason it works, in 60 seconds. No spam, unsubscribe anytime.
Prefer an account? Create a free account to save pairings and unlock the full chemistry.