First fresh Hachiya persimmons are peeled, then hung from strings and left in a sunny, airy spot to dry. For the first week of their transformation, they’re left alone. Once they form a skin, they are treated to frequent gentle massages. Some people massage their persimmons every few days; others, including the persimmon obsessives at Penryn, do this daily. This special treatment goes on for at least a month.