Are you unsure of the difference between bleached and unbleached flour? We can help!
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Katlyn Moncada is the associate food editor at BHG.com, sharing food news and tutorials on becoming better home cooks. She is a writer and editor with nearly a decade of experience in digital media, photography, and video production.
Updated on September 20, 2023
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Jessica is a nationally-recognized Registered Dietitian, Certified Diabetes Educator, Writer, Speaker, and Digital Content Strategist. As the co-founder of the wellness content media company, Food Heaven, Jessica creates engaging food and nutrition content for over 80 global corporations, food companies, and media outlets including American Heart Association, Blue Apron, Adobe, Dove, and KitchenAid. Jessica also co-hosts the top 50 nutrition Food Heaven Podcast, which explores the intersections of nutrition, health, and wellness through a social justice lens. With over 3 million downloads to date, the Food Heaven podcast has been a pillar for accessible and inclusive health and wellness insights since 2015. In addition to being a go-to nutrition expert, writer, and columnist for SELF magazine, Jessica is the co-author of the 28-Day Plant-Powered Health Reboot and A Diabetes Guide to Enjoying the Foods of the World.
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Fact checked byEmily Estep
Emily Estep is a plant biologist and journalist who has worked for a variety of online news and media outlets, writing about and editing topics that range from film and beauty to science and the automobile industry. Her plant biology degree has a focus on sustainable agriculture, and she's an expert on growing your own food, environmental sciences, and all topics relating to houseplants.
Out of all the grains and flours available in the baking aisle, you're probably most familiar with bleached and unbleached all-purpose flour. The bags look the same, and they both have all-purpose baking flour on the label, so what's the difference between unbleached vs. bleached flour? We've broken down the details for you to understand how they're different.
Unbleached vs. Bleached Flour
Unbleached and bleached flour are milled flour; the difference is how they're produced. All milled flour will bleach, or turn white, when exposed to air (unbleached flour). Because this takes time, bleaching agents such as chlorine dioxide and benzoyl peroxide are added to the flour. The resulting bleached flour is whiter and has a slightly softer texture. If you're buying unbleached flour, it's just skipped the step of the added chemicals and is naturally aged after milling. Unbleached flour will have more of an off-white or yellow tint that fades into a lighter white color as it's exposed to oxygen.
Can You Substitute Unbleached Flour for Bleached Flour?
Using unbleached vs. bleached flour makes no difference in recipes. However, baked goods made with bleached flour contain proteins that have been altered, which helps in forming gluten bonds when baking. For example, the more glutinous your bread dough is (from using bleached flour), the easier it will be to handle because it's less sticky. The result will also have more volume and texture, whereas a loaf made with unbleached flour might be a bit denser. Those with a sensitive palate may also taste a slight difference if bleached flour is used (due to the chemicals added), but otherwise, the flavor will turn out the same.
Since you're now in baking mode, ensure your kitchen is stocked with the necessary tools and the proper measuring techniques are followed (yes, there is a correct way).
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