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Drink

Hop Yeast

A fermented drink made by boiling hops with potatoes, then mashing with flour, salt, and sugar, adding yeast, and bottling.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 7 ingredients
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Why it works: Flour and sugar 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 ↓

Hop Yeast

Ingredients

Directions

Make the hop liquid

  1. Boil hops in a bag in water with potatoes until they break.

  2. Mash the potatoes with flour, salt, and brown sugar.

  3. Pour the boiling hop water over the mixture and let it cool.

Add yeast and bottle

  1. When lukewarm, add the cake of yeast.

  2. Bottle when cold and keep cool.

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. Flour + sugartop 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).

  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
Add a bitter, aromatic flavour to the liquid.
Potatoes
Provide starch that thickens the mixture and feeds the yeast.
Brown sugar
Supplies sugar for the yeast to ferment, adding sweetness and flavour.
Dried compressed yeast
Ferments the sugars to produce gas that makes the liquid lively.

The step that matters

Add the yeast only when lukewarm. Yeast is killed by boiling-hot liquid, so the mixture must cool enough to be safe for it, yet stay warm enough to stay active and start fermenting.

Swap the potato

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

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

Fit is the average pairing score against hops, flour, sugar. 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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