 Both smaller sizes are available in a frosted variety, which has one side coated with sugar and usually gelatin.Some manufacturers have produced "filled" versions of the bite-size cereal containing a raisin at the center, or apricot, blueberry, raspberry, cherry, cranberry or golden syrup filling.In the United States, shredded wheat is most heavily advertised and marketed by Post Foods, which acquired the product in 1993 through its parent company, Kraft Foods, buying it from its long-time producer Nabisco.