Why is Gators Fabulous Frozen Custard so great and special? Harry Klaus has been in the dairy business for over 25 years. Harry and Bill Reidelberger opened Gator's over 20 years ago. Harry and his family eventually took it over completely several years later. Continuing the tradition to this day, Gator's secret recipe is to offer the best quality custard and soft serve ice cream available along with great customer service.