Sierra Young, along with 3 part-time employees


Inspired by her love of mangoes, Sierra started developing Mangosay during 2020. With support from Mandela Partners, a West Oakland based nonprofit that supports BIPOC entrepreneurs, she scaled up her recipes and business. Mangosay started popping up at the Ferry Plaza Farmers Market in 2022 and joined as a permanent vendor in 2023. From her signature orange mobile mango cart, she serves up non-dairy mango smoothies, mango juice (which she presses fresh the same morning), and seasonal treats such as mango sticky buns and green mango noodles.


Mangosay sources mangoes from Mexico, Peru, Ecuador, and Brazil.