Flour in 1878 at the Washburn "A" Mill in Minneapolis which killed 22 people. Bread, pasta, crackers, many cakes, and many other foods are made using flour. Wheat flour is also used to make a roux as a base for thickening gravy and sauces. It can also be used as an ingredient in papier-mâché glue. Cornstarch is a principal ingredient used to thicken many puddings or desserts, and is the main ingredient in packaged custard. Flour Flour is a powder made by grinding raw grains or roots and used to make many different foods. Cereal flour is the main ingredient of
Cocoa butter and theobromine. Some food manufacturers substitute less expensive materials such as vegetable oils and fats in place of cocoa butter. Several analytical methods exist for testing for diluted cocoa butter. Adulterated cocoa butter is indicated by its lighter color and its diminished fluorescence upon ultraviolet illumination. Unlike cocoa butter, adulterated fat tends to smear and have a higher non-saponifiable content. Cocoa butter is becoming increasingly costly. Substitutes have been designed to use as alternatives. In the United States, 100% cocoa butter must be used for the product to be called chocolate. The EU requires that alternative fats not exceed 5%