1414 Sherman Road, Romeoville, Illinois 60446, USA Phone (630) 739-6700 Fax (630) 739-6464 Essen Nutrition operates from a 30, 000 square foot USDA and FDA approved manufacturing plant. Modern state of the art research and development center for: New product development Microbiology lab Chemistry lab Test kitchens Products Dressing and Sauces Mayonnaise Relish Pickles Syrups Power mixes-custom ...