Colby and monterey jack cheese. A gluten free product. Since 1918. rbST free (Does not contain the artificial growth hormone rbST. According to the FDA, no significant difference has been shown between milk derived from rbST treated and non-rbST treated cows). Natural cheese. Our natural colby jack slices are mild and smooth in flavor because Darigold doesn't skip any steps. When it comes to lunch, adding a Darigold slice of cheese makes for a five star review. www.darigold.com. Resealable for freshness.