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  1. Buy, Store & Serve Safe Food

Handling Flour Safely: What You Need to Know

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Learn safety tips to protect you and your family when preparing foods that contain flour.

Flour is a raw food. It may not look like a raw food, but it usually is, just like fresh tomatoes or carrots. The grains from which flour is ground are grown in fields and, like all foods grown outdoors, they may be exposed to a variety of harmful bacteria like Salmonella and pathogenic Escherichia coli (E. coli).

Mom and Daughter Cooking with Flour

5 Important Things to Know About Flour

  1. Flours most commonly used in home baking and cooking are made directly from raw grains.
  2. Processing raw grains into flour does not kill harmful bacteria.
  3. Many foods made with flour also contain raw eggs, which may contain harmful bacteria.
  4. Cooking is the only way to be sure that foods made with flour and raw eggs are safe.
  5. Never eat or taste raw flour, dough, or batter.


Since 2009 there have been several outbreaks of foodborne illness involving raw flour or raw flour-containing products like cake mixes and cookie dough. These have resulted in 168 known illnesses and 20 hospitalizations.

Dos and Don’ts of Handling Flour

Check out this list of DO’s and DON’Ts to help keep you and your family safe when handling raw flour.

  • DO follow package directions on baking mixes and other flour containing products for correct cooking temperatures and specified times.
  • DO keep all raw foods, like flour and eggs, separate from ready-to eat foods. Remember, flour is a powder and spreads easily.
  • DO refrigerate cookie and pastry dough according to package directions. Use a refrigerator thermometer to be sure your refrigerator is at a safe 40°F.
  • DO clean up carefully after working with flour or raw dough and eggs:
    • Wash hands thoroughly with soap and running water, and,
    • Wash utensils, bowls, baking pans and cutting boards, and countertops with warm, soapy water.
  • DO NOT eat, taste, or allow children to eat or play with raw dough products or baking mix before cooking.
  • DO NOT keep recalled flour. Throw it away.
  • DO NOT let children use raw dough for crafts or play clay.
  • DO NOT use products that contain raw flour, like cake mix, to make ready-to-eat products like milkshakes.
  • DO NOT try to heat treat flour in your own home. Home treatments of flour may not effectively kill all bacteria and do not make it safe to eat raw.
  • DO NOT use raw cookie dough in ready-to-eat ice cream.

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