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An Unfailing Yeast

A homemade leavening yeast for bread, made by boiling hops and potatoes with sugar, salt and ginger.

From an old cookbook · modernised transcription
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Why it works: Ginger and tea work together. They rank in the top 7% of all ingredient pairs, and cooks put them together in 216 recipes. Both carry (e)-2-octenal, which smells fatty, green. The science ↓

An Unfailing Yeast

four loaves

Ingredients

Directions

Make the hop and potato yeast

  1. Put a handful of hops into a bag and drop it into two quarts of boiling water.

  2. While the hops steep, wash, peel and grate six medium sized potatoes.

  3. Take out the hops.

  4. Put in the potatoes and boil a few minutes, stirring continually.

  5. Add a half tea-cup of white or light brown sugar and the same amount of salt.

  6. When cool, stir in a tea-cup of yeast. Let it rise till it becomes a mass of foam, then jug it tight.

  7. Steep one large handful of hops until the strength is gone.

  8. Mash one dozen potatoes in the water in which they were boiled and pour into a jar.

  9. Add one cup of sugar, one-half cup of salt and one tablespoonful of ginger to the jar.

  10. Add the hop water to this mixture until you have one gallon.

  11. When cooled to blood heat, add one cup of the same yeast.

  12. Keep warm from six to eight hours.

  13. When light, bottle and set in the cellar.

Make the sponge

  1. Boil a double handful of hops in a thin bag with one quart of boiling water.

  2. Boil one quart of potatoes cut in small pieces with the hops until thoroughly done, keeping them covered tight.

  3. Take the potatoes out and mash well, then pour the boiling hop water over them.

  4. Add two tablespoons of sugar, two of ginger and one of salt.

  5. Let it stand until just warm, then add one tea-cup of yeast, or more.

  6. Boil one pint of peeled potatoes cut in small pieces in one and one-half pints of water.

  7. Skim out the potatoes and mash fine.

  8. Add four tablespoons of fine flour to the potatoes, pour over the potato-water and stir till smooth.

  9. When cool, add four tablespoons of yeast and a teaspoon of salt.

  10. Let it rise over night.

Mix and knead the dough

  1. In the morning, pour one pint of boiling water in the center of the bread-bowl filled with flour, and mix.

  2. Add enough cold water to make lukewarm.

  3. Pour in the sponge made the night before, mix the dough soft and knead one-half hour.

  4. Put back in the bread-bowl and set to rise.

  5. When light, knead down and set to rise again.

  6. Knead into loaves and when light, bake in a moderate oven.

Shape and bake

  1. Mix a batter with warm water and a little salt, using one teacup of yeast to each quart of water.

  2. Mix at night if the weather is not very warm, or in the morning if quite warm.

  3. When light, add flour till the dough is stiff, knead thoroughly, cover and let rise again.

  4. When light again, knead and let it stand.

  5. Repeat kneading several times for a finer texture.

  6. Knead into loaves and let rise until light, then bake in a hot oven.

  7. On the evening of the day before bread is wanted, take one quart of water, two-thirds of a cup of yeast and stir in flour to make a thick batter.

  8. Let rise, knead it well at night and cover close.

  9. In the morning, knead lightly, put into pans and bake when sufficiently risen.

Nutrition, whole recipe (rough)

667Calories
17 gProtein
1 gFat
145 gCarbs

Counts 5 of 7 ingredients. The other 2 aren't in our nutrition table and add nothing above, so the real totals are higher.

What these numbers assume: 5 portions
IngredientPortion assumedkcal
Flour1 cup (125g) all-purpose455
Potato1 medium (173g) baked161
Sugar1 tbsp (12.5g) granulated49
Ginger1 tsp grated fresh (2g)2
Salt1 tsp (6g)0
Waternot in our table0
Hopnot in our table0

One typical portion per ingredient; the recipe's quantities are not counted. A rough guide only, not for medical or dietary planning.

By Des Moines. Plymouth church. [from old catalog]. 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. See the original page.

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. Ginger + teatop 7% of all pairs
    Smell alikemoderate
    Cooked together216 recipes

    Shared aroma: (e)-2-octenal (fatty, green).

  2. Potato + teatop 10% of all pairs
    Smell alikemoderate
    Cooked together136 recipes

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

  3. Ginger + potatotop 12% of all pairs
    Smell alikemoderate
    Cooked together992 recipes

    Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).

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

    Shared aroma: phenylacetaldehyde (hawthorne, honey).

  5. 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

Potatoes
Starch and body that thicken the liquid and feed the yeast.
Yeast
Ferments sugars to produce gas, making the dough rise.
Flour
Forms the gluten network that gives the bread its structure.
Sugar
Feeds the yeast so it ferments and foams.
Hops
Add bitterness and aroma and help keep the yeast mixture stable.
Ginger
Adds a warm, spicy aroma to the yeast mixture.

The step that matters

Add the yeast only when the mixture has cooled to blood heat. Yeast is killed by very hot liquid, so adding it too early can stop fermentation. Blood heat is warm enough to activate it without harming it.

Swap the potato

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

  1. Arrowrootfits about as well
  2. Mustardfits about as well
  3. Capsicumfits about as well
  4. Potatothe original

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