What is the shelf life for the Duncan Hines cake mix?
According to the Duncan Hines web site, their “Layer Cake mixes perform best if used within one year of the manufacturing date. Other Duncan Hines mixes and frostings should be used within one year. This time frame is only a guideline. If stored in a cool, dry area our products will remain fresh longer. Older mix is not harmful in any way; however, the leavening ingredient is affected by age, and the product may not rise properly.” http://www.duncanhines.