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 Vinegar
Ingredients
Directions
Prepare the base
Wash and crush the rhubarb in a strong tub using a potato masher.
Add 5 gallons of cold water, cover, and let it sit for 24 hours.
Strain the mixture and add 8 pounds of brown sugar.
Stir in the yeast until the sugar is dissolved.
Let it sit in a warm place overnight.
Make the vinegar
In the morning, transfer to a 10-gallon cask, ensuring the temperature stays above 60°F (15°C).
After a month, strain off the grounds and return the liquid to the cask.
Let it stand until it becomes vinegar, which may take 2 to 3 weeks.
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.
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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 tart flavor and plant material that the fermentation works on.
- Brown sugar
- Feeds the yeast, which ferments the sugar into alcohol that acetic bacteria then turn into vinegar.
- Yeast
- Starts the fermentation that converts the sugar into alcohol.
The step that matters
Keeping the cask above 60°F (15°C). Yeast ferments slowly or stalls in cool conditions, so a warm cask keeps the first fermentation moving before the vinegar-making stage begins.
“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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