Why it works: Rhubarb and sugar are a kitchen classic. They rank in the top 18% of all ingredient pairs, and cooks put them together in 1,852 recipes. Both carry 1-penten-3-one, which smells fish, pungent. The science ↓
Rhubarb Isinglass Jelly
Ingredients
Directions
Prepare the rhubarb
Wash and drain the rhubarb, slice it without peeling, removing any coarse or discolored parts.
In an enamelled stewpan, combine the rhubarb and water, then add the sugar lumps.
Boil gently for 20 minutes until the rhubarb is stewed but not thickened.
Strain the mixture through a muslin cloth folded in four.
Measure 1½ pints of the liquid.
Make the jelly
In a clean pan, heat the strained liquid and add the isinglass and large sugar lumps.
Stir often until the isinglass is fully dissolved.
Boil quickly for a few minutes to remove scum.
Carefully clear off the scum.
Strain the jelly twice through the muslin cloth.
Let it cool.
Mold it as desired.
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 + sugartop 18% of all pairsSmell alikemoderateCooked together1,852 recipes
Shared aroma: 1-penten-3-one (fish, pungent).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Rhubarb
- Provides the main flavour and tartness, and its pectin-rich pulp gives body to the jelly.
- Isinglass
- Sets the liquid into a firm jelly as it cools.
- Sugar
- Adds sweetness and helps the jelly hold its set.
The step that matters
Boiling the jelly to remove scum. Isinglass must be fully dissolved before the quick boil, since undissolved gelatin-like material will not set evenly. Skimming the scum removes impurities that would cloud the jelly and spoil its clarity.
“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.
You might also like
Rhubarb Pie152 recipes
Rhubarb Marmalade35 recipes
White Cake431 recipes
Pound Cake373 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.