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Also known as: dry yeast, ADY, baker's yeast
Per 100g
Nutrition data source: USDA FoodData Central
Common measurement equivalents in grams
Active dry yeast is a nutrient-dense ingredient rich in B-vitamins like thiamin, riboflavin, and folate, which are essential for energy metabolism. It also provides minerals like selenium and zinc that support immune health. While used in small quantities, it contributes beneficial beta-glucans and complete protein to baked goods.
Active dry yeast is very high in protein, containing approximately 40.44g per 100g. It is a complete protein source, providing all nine essential amino acids necessary for tissue repair. However, because a standard recipe uses only a few grams, it acts as a nutritional supplement rather than a primary protein source.
Yes, active dry yeast is naturally vegan and gluten-free. It is a single-celled fungus (Saccharomyces cerevisiae) and contains no animal products or grain-based proteins. Always check the packaging for 'certified gluten-free' labels if you are concerned about cross-contamination during processing.
Active dry yeast is considered keto-friendly because it is used in very small amounts. While it contains about 41g of carbs per 100g, a typical serving (one packet or 7g) contains less than 3g of carbs. Furthermore, much of the sugar and starch in the dough is consumed by the yeast during the fermentation process.
To activate it, dissolve the yeast in warm water (between 100°F and 110°F) with a pinch of sugar. Let it sit for 5 to 10 minutes until it becomes foamy and develops a distinct yeasty aroma. If the mixture does not foam, the yeast may be dead and should not be used.
Yes, you can substitute them at a 1:1 ratio, but the method changes. Active dry yeast must be dissolved in warm liquid before use, whereas instant yeast can be mixed directly into dry ingredients. Additionally, active dry yeast may require a slightly longer rising time than instant yeast.
active dry yeast is a versatile ingredient found in cuisines around the world. With 325 calories per 100g and 40.4 grams of protein, it's a nutritious addition to many dishes.
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Unopened yeast should be stored in a cool, dry place. Once opened, store it in an airtight container in the refrigerator for up to 4 months or in the freezer for up to 6 months. Exposure to heat, air, and moisture will quickly kill the live yeast cells.
You can test freshness by 'proofing' a small amount: mix 1 teaspoon of yeast with 1/2 cup warm water and a pinch of sugar. If it bubbles and doubles in volume within 10 minutes, it is fresh. If there is no reaction, the yeast is no longer active and your bread will not rise.
It is not recommended to eat active dry yeast raw. Because the yeast is alive, it can continue to grow in your digestive tract, potentially causing significant bloating, gas, and stomach cramps. Always bake or cook the yeast to deactivate it before eating.
Active dry yeast is a living organism used to make bread rise through fermentation. Nutritional yeast is the same species but has been deactivated (killed) and toasted, resulting in a flaky powder with a cheesy, nutty flavor. They are not interchangeable; using active dry yeast as a seasoning will result in a bitter taste and digestive issues.