Each individual packet of Color Garden™ pure natural food colors delivers enough color to frost one medium-sized cake (roughly sixteen ounces of frosting). The single-use packet is designed to be used all at once. Remember: these are all-natural colors; they do not contain any artificial preservatives. It is therefore best to use the entire contents of a single package. When working with natural colors that they are sensitive to heat – while the batter may be a beautiful deep red color when it goes into the oven, it very likely will come out of the oven brown.