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Starter, Lightning Yeast

A yeast starter made by soaking yeast in water, boiling potatoes, adding sugar, mixing, letting rise, and using half for bread.

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

Starter, Lightning Yeast

Oven, in the book's wordsA moderately hot oven

Ingredients

Directions

Prepare the starter

  1. Soak the yeast in enough water to cover it until soft.

  2. Boil the potatoes in enough water to yield 1 pint of potato water.

  3. Add 3 tablespoons of sugar to the potato water and let it cool to lukewarm.

  4. Add the yeast foam to the cooled potato water.

  5. Prepare this mixture at noon and let it rise until evening.

Use and store

  1. Use half of the mixture to make bread and store the remainder in a glass jar in a cool place for future use.

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.

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

Yeast
Ferments the sugars and produces gas that makes the starter rise and bubble.
Potatoes
Provide starch and liquid that feed the yeast and add moisture to the starter.
Granulated sugar
Provides food for the yeast so it becomes active and foams.

The step that matters

Cooling the potato water to lukewarm. If the potato water is still hot, it can kill the yeast before it becomes active. Lukewarm liquid is warm enough to activate yeast without harming it.

“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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