 Greyston employed low-skilled workers from the neighborhood, many of whom were homeless themselves, and sold baked goods to shops and restaurants in Manhattan.In 1989 Glassman entered an agreement with Ben & Jerry's, and Greyston Bakery has become the supplier of brownies for several lines of ice cream.Through the success of his bakery–which in 2016 was earning $12 million in revenues–Glassman founded the Greyston Foundation (sometimes called Greyston Mandala) with his wife Sandra Jishu Holmes in 1989.