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Potato Yeast

A yeast starter made from mashed boiled potatoes, flour, salt, and baker's yeast.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 4 ingredients
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Potato Yeast

Why it works: Potato and flour are a kitchen classic. They rank in the top 15% of all ingredient pairs, and cooks put them together in 5,355 recipes. Both carry isobutyraldehyde, which smells malty, green. The science ↓

Potato Yeast

Ingredients

Directions

Make the starter

  1. Mash the boiled potatoes smoothly.

  2. Mix in the flour and salt.

  3. Stir in the baker's yeast to form a batter.

Rise and store

  1. Let the mixture rise until light.

  2. Bottle and cork it tightly, then store in a cool place.

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 + flourtop 15% of all pairs
    Smell alikemoderate
    Cooked together5,355 recipes

    Shared aroma: isobutyraldehyde (malty, green).

Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs

What each ingredient does

Mealy boiled potatoes
Provide starch and body that hold the batter together and feed the yeast.
White flour
Adds more starch so the batter thickens and gives the yeast food to ferment.
Baker's yeast
Ferments the starches and sugars, producing gas that makes the mixture rise and turn light.

The step that matters

Let the mixture rise until light. Yeast needs time to multiply and produce gas; stopping too early leaves the starter weak, while the cork and cool storage slow fermentation so it does not over-ferment.

“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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