Aged over 60 days. From cows not treated with rBST (All farmers who supply milk for Tillamook products pledge not to use artificial growth hormones). Farmer owned. Est. 1909 Oregon. Bringing farmers and food lovers together through better made dairy. We take the time to age our cheddar naturally so it tastes smooth, creamy and full. Contains no animal rennet (vegetarian). Questions? Comments? Visit Tillamook.com/Contact. The FDA has stated that no significant difference has been shown between milk derived from rBST treated and non-rBST treated cows. Made in the USA.