Higher authority seal. Since 1987. Passover year round. Rennet free. rBST free (No significant difference has been shown between milk derived from rBST-treated and non rBST-treated e34cows). www.naturalandkosher.com. Facebook: www.Facebook.com/NaturalandKosherCheese. Twitter: www.Twitter.com/KosherCheeses.