Inspired by her love of mangoes, Sierra started developing Mangosay during the pandemic. With support from the Mandela Partners, a West Oakland based nonprofit which supports BIPOC entrepreneurs, she scaled up her recipes and business. Mangosay started popping up at the Ferry Plaza Farmers Market in 2022, as part of Foodwise’s Building Equity Program, and joined as a permanent vendor in 2023. From her signature orange mobile mango cart, she serves up non-dairy mango smoothies, fresh mango juice, and seasonal treats such as mango sticky buns and green mango noodles.
Sierra sources mangoes from a corner store in her East Bay neighborhood.