Snacks and confectionery multinational Mondelez has announced that it is expanding its brand portfolio with the acquisition of US biscuit maker Tate’s Bake Shop. Mondelez, which is acquiring Tate’s Bake Shop for almost $500 million from private equity firm The Riverside Company, will operate Tate’s Bake Shop as a separate standalone business. The company will continue to produce all of its products at its existing manufacturing facility, as well as …