Why it works: Potato and sugar are a kitchen classic. They rank in the top 30% of all ingredient pairs, and cooks put them together in 3,032 recipes. Both carry beta-damascenone, which smells apple, rose. The science ↓
Liquid Yeast
Ingredients
Directions
Make the potato base
Grate or grind the potatoes into the hot water.
Boil for about five minutes, stirring constantly.
Add the sugar and salt, then allow the mixture to cool.
Ferment and store
When lukewarm, add the yeast.
Keep at room temperature (about 70°F) for 24 hours.
Store the yeast in a cool, dark place in a scalded earthen jar or enamelware pail.
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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Potato + sugartop 30% of all pairsSmell alikelowCooked together3,032 recipes
Shared aroma: beta-damascenone (apple, rose).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Potatoes
- Starch that feeds the yeast and gives the starter body and moisture.
- Yeast
- Produces carbon dioxide during fermentation, which makes baked goods rise.
- Sugar
- Provides food for the yeast, driving fermentation and gas production.
- Salt
- Controls yeast activity and adds flavor.
The step that matters
Add the yeast only when lukewarm. Yeast is killed by high heat, so adding it to water or mixture that is still hot can stop fermentation before it starts. Cooling to lukewarm keeps the yeast alive and active.
“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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