Sometimes a cook needs a secret ingredient to make a dish pop, like a squirt of lime or a dash of cinnamon. Maybe your next secret ingredient could be Mountain Dew.Sometimes a cook needs a secret ingredient to make a dish pop, like a squirt of lime or a dash of cinnamon. Maybe your next secret ingredient could be Mountain Dew. The soda brand is about to release Mountain Dew is releasing a cookbook — here's what's inside