Since 1931. 100% natural & rBST free. Founded in Sonoma's historic town center, Sonoma Creamery makes quality, natural cheeses free of artificial hormones and additives since 1931. Our Sonoma Jack cheesemakers are inspired by the vibrant wine country landscape and the agricultural bounty which surround us. Sonoma Hot Pepper Jack is the original article, dating back to the 1980s. The layered flavors of green and red jalapeno peppers blend perfectly with the sweet creamy flavor of Sonoma Jack. www.SonomaCreamery.com. Made with milk from cows not treated with artificial hormones (no significant difference has been shown between milk derived from rBST treated cows and non-rBST treated cows). Naturally lactose free. 100% natural. Gluten free. Vegetarian. Artificial hormone free.