The Chosen Frozen

San Francisco Magazine Rebecca Flint Marx Rebecca Flint Marx Powder brings Taiwanese shaved snow to Divisadero.   When Powder opened on Divisadero in September, it brought with it shaved snow, an ice cream–shaved ice hybrid that’s common in Taiwan but a rare commodity in the Bay Area. Owners Mimi Hanley and David Chung debuted the business at Off the Grid last April; their sleek, bright storefront is an attractive new home. Only a handful of flavors are on the menu, but they can be adultera...