Premium Italian cheese. Real California milk. Made with whole milk. rBST free. Research has shown no significant difference between milk derived from rBST treated and non-rBST treated cows. Burrata is my passion. I learned to make this cream filled mozzarella over 40 years ago in Puglia, Italy. Every day at Di Stefano Cheese, they make burrata by hand using the freshest ingredients. Handcrafted in Southern California.