bromated flour [broh-meyt ed flouuhr, flou-er] noun
Flour containing potassium bromate, most often used in the commercial bread industry. The additive strengthens the dough and provides for optimum oven spring and higher rising.
There have been studies linking potassium bromate to cancer and in fact it is banned in many countries including the U.K. (1990) and Canada (1994). In 1991, California declared it a carcinogen under Proposition 65. Since that year, while usage in California requires special labeling, the FDA has generally recommended that bakers nationwide limit its use. King Arthur Flour is a company that has never sold bromated flour and is a great source for many different baking flours.