More than forty years ago, Stella Cordova took over the Chubby Burger Drive-In on West 38th Avenue and started featuring the green chile she'd learned to make when she was a kid growing up in Colorado. That sauce — thick, savory and laced with enough spice to produce a slow, sweat-inducing burn — soon became iconic. Before she passed away two years ago, she handed that chile recipe down to several of her grandchildren, one of whom was Leonard Cordova. And though Leonard is now estranged from the rest of the Cordova family, he swears he's using his grandmother's original recipe at each of the spots in his rapidly expanding chain, using it to smother chile-cheese fries, burritos and Mexican hamburgers. In doing so, he's channeling his grandmother — but for a decidedly different generation.