Mas Masumoto is an organic peach, nectarine, apricot, and grape farmer and a pioneer in organic farming since the 1980s. He is the author of thirteen books including Epitaph for a Peach, Wisdom of the Last Farmer, and a cookbook, The Perfect Peach. A documentary, Changing Season on the Masumoto Family Farm, was nationally broadcast by PBS in 2016. His newest book, Secret Harvests is about a family history of struggles, disabilities and secrets.
His writing awards include Commonwealth Club medal, Julia Child Cookbook award and the Independent Publisher Book Award. Secret Harvests was a 2024 finalist for the National Book Critics Award. He currently serves on the boards of CalMatters and Central Valley Community Foundation.