Why it works: Flour and sugar are a kitchen classic. They rank in the top 15% of all ingredient pairs, and 92,116 recipes mention both. Both carry phenylacetaldehyde, which smells hawthorne, honey. The science ↓
Dick Bennet's Receipt for Yeast
Ingredients
Directions
Make the potato mash
Peel and boil the potatoes with hops in enough water to cover them.
Once tender, strain the water and mash the potatoes.
Return the mashed potatoes to the water, mix well, and add flour, sugar, and salt.
Cook for a few minutes, adding enough flour to make a thin batter.
Ferment and store
Let it cool until lukewarm, then add the yeast and mix well.
Place in a stone jar, cover, and let it stand in a warm place for 12 hours, stirring three times.
Place a weight on the lid and store in a cool 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 aroma chemistry they share, and how many recipes mention both.
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Flour + sugartop 15% of all pairsAroma overlapmoderateMentioned together92,116 recipes
Shared aroma: phenylacetaldehyde (hawthorne, honey).
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Potato + flourtop 15% of all pairsAroma overlapmoderateMentioned together5,355 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Potato + sugartop 30% of all pairsAroma overlaplowMentioned together3,032 recipes
Shared aroma: beta-damascenone (apple, rose).
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Hops + flourtop 32% of all pairsAroma overlaplowMentioned together10 recipes
Shared aroma: eugenol (clove, spicy).
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Potato + hopstop 39% of all pairsAroma overlaplowMentioned together3 recipes
Shared aroma: myrcene (balsamic, herbaceous).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Potatoes
- Supply starch and body that the yeast feeds on during fermentation.
- Hops
- Add bitterness and aroma, and help preserve the starter against spoilage.
- Sugar
- Provides quick food for the yeast, driving early fermentation.
- Flour
- Thickens the mixture into a batter that gives the yeast structure to work in.
- Yeast
- Converts sugars into carbon dioxide and alcohol, leavening and fermenting the starter.
The step that matters
Let it cool until lukewarm before adding the yeast. Yeast is killed by high heat, so adding it to a hot mixture can stop fermentation before it starts. Lukewarm liquid keeps the yeast alive and active.
Flavor stand-ins for the potato
How well each one fits the dish's main ingredients (hops, flour, sugar):
- Mustardbetter flavor fit
- Arrowrootbetter flavor fit
- Parsnipbetter flavor fit
- Potatothe original
Fit is the average pairing score against hops, flour, sugar. Candidates are from the same food group and used in at least 100 recipes. This compares flavor only: it does not check the job the ingredient does in the dish (bulk, moisture, acidity, structure).
“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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