Non GMO. The taste you trust. Always from California-Grown Onions. Our Onion Powder brings sharp, toasty flavor to recipes. Try 1 tbsp. in place of 1/2 cup chopped fresh onions. mccormick.com. SmartLabel. Questions? Call 1-800-632-5847. Packed in USA. Our Onion Powder brings sharp, toasty flavor to recipes. Try 1 tbsp. in place of 1/2 cup chopped fresh onions.