Jiffy® Corn Muffin Mix. America's favorite. Quality and value since 1930. Add egg and milk. Thanks for trying Jiffy! We've been making great muffin and baking mixes since the 1930's. So, when you are looking for delicious muffins, biscuits, desserts, or other great meal solutions, please think Jiffy! Howdy Holmes, President Chelsea Milling Company. Cakes, muffins, biscuit, frostings, brownie, pizza crust, pie crust, pancake & waffle, baking mix. Additional recipes at: www.jiffymix.com. Contact us at: 800-727-2460 Mon. - Fri. 8:00 AM - 4:30 PM EST. Packaged in recycled paperboard. Great products since 1930.