The automated process for creating Krispy Kreme doughnuts, developed in the 1950's, took the company many years to perfect. When you drive by your local Krispy Kreme store between 5:00 and 11:00 each day (both a.m. and p.m.) and see the "Hot Doughnuts Now" sign lit up, inside the store custom-made stainless steel machines are rolling. Doughnut batter is extruded into little doughnut shapes that ride up and down through a temperature and humidity controlled booth to activate the yeast. This creates the perfect amount of air in the dough that will yield a tender and fluffy finished product. When the doughnuts are perfectly puffed up, they're gently dumped into a moat of hot vegetable shortening where they float on one side until golden brown, and then the machine flips them over to cook the other side. When the doughnuts finish frying, they ride up a mesh conveyor belt and through a ribbon of white sugar glaze. If you're lucky enough to taste one of these doughnuts just as it comes around the corner from the glazing, you're in for a real treat—the warm circle of sweet doughy goodness practically melts in your mouth. It's this secret process that helped Krispy Kreme become the fastest-growing doughnut chain in the country.