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Yeast That Will Not Soue

A yeast starter made with hops, water, sugar, flour, mashed potatoes, and salt.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 6 ingredients
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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 ↓

Yeast That Will Not Soue

Ingredients

Directions

Make the hop liquid

  1. Boil the hops in the water for 10 minutes.

  2. Strain the hops and pour the liquid into a jar with the brown sugar.

Ferment

  1. Stir in the flour until smooth.

  2. Let the mixture stand in a warm place until it ferments.

Finish the starter

  1. Add the mashed potatoes and coarse sea salt, mixing well.

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

    Shared aroma: phenylacetaldehyde (hawthorne, honey).

  2. Flour + potatotop 15% of all pairs
    Smell alikemoderate
    Cooked together5,355 recipes

    Shared aroma: isobutyraldehyde (malty, green).

  3. Sugar + potatotop 30% of all pairs
    Smell alikelow
    Cooked together3,032 recipes

    Shared aroma: beta-damascenone (apple, rose).

  4. Hops + flourtop 32% of all pairs
    Smell alikelow
    Cooked together10 recipes

    Shared aroma: eugenol (clove, spicy).

  5. Hops + potatotop 39% of all pairs
    Smell alikelow
    Cooked together3 recipes

    Shared aroma: myrcene (balsamic, herbaceous).

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

What each ingredient does

Hops
Boiling them flavours the liquid with bitterness and aroma.
Brown sugar
Provides sweetness and easily used food for the yeast to ferment.
Flour
Thickens the mixture and supplies starch the yeast can work on.
Potatoes
Add moisture and starch, giving the mixture body and more material to ferment.

The step that matters

Let the mixture stand in a warm place until it ferments. Yeast activity depends on warmth. In a cool spot fermentation is slow or stalls, while the mixture needs time to show clear signs of fermenting before the potatoes and salt are added.

Swap the potato

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

  1. Mustardfits better
  2. Arrowrootfits better
  3. Parsnipfits better
  4. Potatothe original

Fit is the average pairing score against hops, 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.

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