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Potato Yeast

A fermented potato mixture used as a yeast starter for baking.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 5 ingredients
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Potato Yeast

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 ↓

Potato Yeast

Ingredients

Directions

Make the potato base

  1. Peel the potatoes and soak them in cold water for 30 minutes.

  2. Grate the potatoes and stir them into the boiling water.

  3. Stir over heat for 5 minutes, then remove from heat.

  4. Add sugar and salt, then transfer to a stone jar or bowl and let cool to lukewarm.

Ferment and store

  1. Add the yeast, cover, and let ferment for 3-4 hours, stirring down as needed.

  2. Transfer to a tightly covered jar or bottle and store in a very cold place, but not frozen.

Recipe from a historical cookbook (Internet Archive).

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.

Photo for illustrative purposes only · Contact us to use it

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.

  1. Potato + sugartop 30% of all pairs
    Smell alikelow
    Cooked 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
Their grated starch thickens the liquid and gives the starter body and food for the yeast.
Yeast
Its microbes ferment the sugars and starches, producing gas and flavour that leaven the starter.
Sugar
Provides a quick energy source that feeds the yeast during fermentation.

The step that matters

Let the mixture cool to lukewarm before adding the yeast. Yeast cells are killed by very hot liquid. Cooling to lukewarm keeps them alive and active so fermentation can start properly.

“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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