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Baker's Yeast

Baker's yeast is a leavening microorganism used to ferment dough and produce bread and other baked goods.

Baker's Yeast — illustrative ingredient image

About Baker's Yeast

Baker's yeast is a cultivated leavening yeast used to ferment sugars in dough. Its fermentation produces carbon dioxide, which expands the dough, and creates the aromas associated with risen bread. It is used in loaves, rolls, pizza dough, enriched doughs, and other yeast-leavened baked goods.

Fresh yeast is moist and compressed, while dry yeast is granular and shelf-stable. The yeast itself has a mild, distinctive fermentation aroma; the finished flavour depends more broadly on the yeast product, dough ingredients, fermentation time, and handling. Longer fermentation generally develops a fuller bread aroma.

Common forms include fresh compressed yeast, active dry yeast, and instant or rapid-rise dry yeast. Fresh yeast is crumbled into dough or dissolved, whereas dry forms are mixed into the flour or hydrated according to the product. Proofing, kneading, rising, and baking change its state completely within the dough.

Ingredient type
extract

Forms & related ingredients

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Where baker's yeast appears

212 linked foods

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Main dishes

Snacks

Ingredient connections awaiting review · Coverage is still growing, including packaged snacks.

Name examples awaiting language review. Confirm the specific food or product.

Local names for baker's yeast

Names and romanised forms to recognise on menus and labels.

English

baker's yeast

English

Baker's yeast compressed

Search alias · Not a confirmed translation

English

bakers yeast

Search alias · Not a confirmed translation

Available names only. Languages may be spoken in other countries; a name alone does not identify every ingredient in a dish.

Baker's Yeast nutrition & diet

Baker's Yeast nutritional value

Yeast, bakers, compressed

Per 100 g of the edible portion in the stated food form.

Calories
53kcal
Protein
11.4g
Carbs
1.1g
Fat
0.4g

Reference values apply to the named food form, not every preparation, variety or brand. CoFID 2021 food code 17-378. Carbohydrate follows the dataset’s available-carbohydrate convention. Contains public sector information licensed under the Open Government Licence v3.0: https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/.

Portions & preparation

Use the yeast amount specified for the dough and distinguish active dry, instant, and fresh forms before comparing references. Hydration, fermentation time, and baking alter the finished food’s composition. Count the surrounding flour, sugar, fats, and fillings separately rather than attributing the whole baked product to yeast.

Compare the right form: Match the reference to baker’s yeast as active dry, instant, compressed fresh, or another specified form, measured as used or before hydration.

Diet considerations

Baker’s yeast is a microorganism-derived ingredient, but the dough determines dietary compatibility. Wheat or other cereal flour, dairy, eggs, fats, sweeteners, fillings, and toppings may be present. Fermented dough remains a cereal-based food, while packaged yeast blends or flavoring products require their ingredient lists and processing details.

AI-authored reading notes · Awaiting editorial review. Measured values, where available, have a separate source above.

Dietary compatibility

  • Vegan
    Typically compatible
  • Vegetarian
    Typically compatible
  • Pescatarian
    Typically compatible
  • Keto
    Not established
  • Paleo
    Not established
  • Low-carb
    Not established
  • Halal
    Not established
  • Kosher
    Not established
What these diet assessments mean
Vegan · Typically compatible
The plain ingredient profile is plant, fungal or mineral based. Added ingredients in a prepared product need a separate check.
Vegetarian · Typically compatible
The plain ingredient profile is plant, fungal or mineral based. Added ingredients in a prepared product need a separate check.
Pescatarian · Typically compatible
The plain ingredient profile is plant, fungal or mineral based. Added ingredients in a prepared product need a separate check.
Keto · Not established
A defined serving and sourced carbohydrate data are needed before assessing this dietary pattern.
Paleo · Not established
The ingredient form and processing have not been assessed against this dietary pattern.
Low-carb · Not established
A defined serving and sourced carbohydrate data are needed before assessing this dietary pattern.
Halal · Not established
Sourcing, processing and any applicable certification have not been verified. A food name alone does not establish halal status.
Kosher · Not established
Sourcing, processing and any applicable certification have not been verified. A food name alone does not establish kosher status.

For the plain ingredient · Awaiting review. Diet compatibility is not allergy suitability or halal/kosher certification. Keto and low-carb depend on the portion.

Reviewed ingredient entryIngredient reference · Preparations vary

AI-generated illustration for visual context. It does not identify a particular product or establish allergen content.

Sources & review

Nutrition reference: UK Composition of Foods Integrated Dataset (CoFID), 2021 — Yeast, bakers, compressed ↗. Values are scaled from 100 g of the recorded edible form. Individual portions have no assumed fixed weight.

Expanded overview, name examples and nutrition notes are database drafts awaiting editorial review. Numeric nutrition values, where shown, have their own source and food-form reference.

The ingredient description and dish connections come from the draft catalogue and may change after review.

Last recorded verification: .