Non GMO Project Verified Non-ETO* Non-Irradiated Kosher You can feel good about the superior flavor of Frontier Co-op seasonings. We look to growers who share our commitment to quality. *ETO (ethylene glycol) is a sterilization chemical commonly used in the spice industry, but never by Frontier Co-op. Frontier Chipotle Pepper, stemming from the Nahuatl word chilpoctli (meaning "smoked chili"), are actually dried, smoked jalapeno peppers. Their smoky-sweet flavor is often used in Southwestern and Mexican dishes to impart a relatively mild but earthy spiciness in everything from chili to barbeque.