USDA-based · How this page was made · Last reviewed August 31, 2026 · Sources ↓
Flour is a raw food. Don't eat the dough.
Most flour has not been treated to kill bacteria. Grinding and bleaching do not kill E. coli or Salmonella. FDA and CDC: never eat or taste raw flour, dough, or batter — cookies, brownies, cake mix, pie crust, tortillas, pizza, biscuits, pancakes, or homemade play dough. Do not use cake mix in milkshakes or homemade raw dough in ice cream. Do not try to heat-treat flour at home; FDA says home treatments may not kill all bacteria. The safer eat-raw option is dough labeled edible or safe to eat raw (heat-treated flour and pasteurized eggs).
Flour looks shelf-stable. It is still a raw food until it is baked or cooked.
Most people do not think flour is risky
FDA’s 2019 survey: most people in the U.S. do not think raw flour is risky to eat. Grains can pick up harmful bacteria in the field or during milling. Steps like grinding and bleaching do not kill those germs — cooking and baking do.
FDA handling-flour page: since 2009, several outbreaks involving raw flour or flour-containing products (cake mixes, cookie dough) have resulted in 168 known illnesses and 20 hospitalizations. We do not inflate that count.
What not to eat or taste
CDC (raw flour and dough, Nov 24 2025): do not eat raw dough or batter — cookies, brownies, cakes, pie crusts, tortillas, pizza, biscuits, pancakes, or crafts made with raw flour such as homemade play dough. Do not let children play with or eat dough made with raw flour. Do not add cake mix to milkshakes or homemade raw cookie dough to ice cream. Store-bought cookie-dough ice cream uses dough that has been treated to kill harmful germs; homemade raw dough does not (CDC).
Raw eggs are a second Salmonella risk in many doughs and batters. FDA: cooking is the only way to be sure foods made with flour and raw eggs are safe.
Recalls and shelf life
CDC investigated outbreaks linked to raw flour or cake mix in 2016, 2019, 2021, and 2023; some of those investigations led to recalls. Flour and baking mixes have long shelf lives — check your pantry against FDA’s recall list and throw recalled product away. Do not keep recalled flour.
Handle it like a raw food
- Follow package times and temperatures for baking mixes and flour-containing products.
- Keep flour and eggs separate from ready-to-eat foods. Flour is a powder and spreads easily.
- Refrigerate cookie and pastry dough per the label; keep the fridge at 40°F (see fridge temperature).
- Wash hands, bowls, utensils, baking pans, cutting boards, and counters with warm, soapy water after working with flour or raw dough and eggs.
Edible dough is the safer eat-raw option
Some companies sell edible cookie dough and brownie batter made with heat-treated flour and pasteurized eggs (or no eggs). Read the label: CDC Safer Food Choices lists dough and batter labeled “edible” or “safe to eat raw,” or made with heat-treated flour and pasteurized eggs, as the safer choice versus raw dough or batter made with uncooked flour.
Do not heat-treat flour at home
FDA: do not try to heat-treat flour in your own home. Home treatments may not effectively kill all bacteria and do not make flour safe to eat raw. A home heat-treatment protocol is UNKNOWN here — we do not publish one.
One family’s story
CDC publishes Harlee’s story: an E. coli illness linked to cake batter on the same raw-flour page cited above.
Sources
- FDA: Handling Flour Safely — What You Need to Know — FDA, UNKNOWN
- FDA: Flour Is a Raw Food and Other Safety Facts — FDA, UNKNOWN
- CDC: Raw Flour and Dough — CDC, 2025
- CDC: Safer Food Choices — CDC, 2025