Skip to main content
Bread

Potato Yeast

A fermented potato-based yeast mixture used to leaven bread.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 7 ingredients
Jump to recipe ↓
Potato Yeast

Why it works: Sugar and flour are a kitchen classic. They rank in the top 15% of all ingredient pairs, and cooks put them together in 92,116 recipes. Both carry phenylacetaldehyde, which smells hawthorne, honey. The science ↓

Potato Yeast

Ingredients

Directions

Make the starter

  1. Cook and mash the potatoes.

  2. Pour the boiling water over the mashed potatoes and stir well.

  3. Add the sugar and let it stand for a few minutes.

  4. Pour in the cold water and stir in the yeast.

  5. Set the mixture in a warm place to rise until well fermented.

  6. Transfer to a stone jug and cork tightly.

  7. Reserve enough for another batch.

Make the bread

  1. To make bread, use 1 cup of the yeast mixture to make one large loaf or two small ones.

  2. For three loaves, mash 3 medium potatoes and rub them through a colander with the cooking water.

  3. Add ⅔ cup homemade yeast or ½ cup baker's yeast and enough flour to make a stiff sponge.

  4. Add a little salt in the morning, knead the dough, and add more flour as needed.

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. Sugar + flourtop 15% of all pairs
    Smell alikemoderate
    Cooked together92,116 recipes

    Shared aroma: phenylacetaldehyde (hawthorne, honey).

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

    Shared aroma: isobutyraldehyde (malty, green).

  3. 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
Cooked and mashed to give the starter body and starch for the yeast to feed on.
Sugar
Provides food for the yeast, driving fermentation and rise.
Yeast
Ferments the mixture, producing gas that leavens the bread.
Flour
Forms the stiff sponge and gives the dough structure once kneaded.

The step that matters

Let the mixture rise until well fermented. Yeast needs time in a warm place to multiply and produce enough gas. Under-fermented starter gives weak rising and a dense loaf.

Swap the potato

How well each one fits the dish's main ingredients (sugar, flour):

  1. Arrowrootfits better
  2. Beetrootfits better
  3. Sweet potatofits better
  4. Potatothe original

Fit is the average pairing score against sugar, flour. Candidates are from the same food group and used in at least 100 recipes.

“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.

You might also like

CornbreadCornbread345 recipesBread PuddingBread Pudding336 recipesMilk Bread RollsMilk Bread Rolls242 recipesNut BreadNut Bread109 recipes