Since 1891 - Ceresota. 100% Whole Wheat Flour, often referred to as graham flour, is made from the entire wheat kernel. Ceresota 100% Whole Wheat Flour contains no additives or preservatives. Refrigerated storage is recommended to retain freshness. Best baking results are obtained when Ceresota 100% Whole Wheat and Ceresota unbleached All-Purpose Flour are combined in recipes. Since 1891, Ceresota Flour has been the highest quality flour available for all your baking needs. Contains no bleaching agents or preservatives.