It's the classic story: boy meets donut.
Or, in Massimo Giusti's case, bombolino, the Italian version of the American favorite served warm on the beaches of his home country. These days, Massimo serves his signature light-as-air mini treats -- served on a stick and filled with Nutella, lemon-vanilla cream or raspberry jam -- in places in and around his current 'hood in San Francisco.
Best way to find him? His website has a list of current vendors (who also sell standard-sized bombolini, cannoli, and the filling-free frati donuts) and watch his Instagram for updates on pop-ups. Just be quick because they sell out fast.
Which is not the ending you were hoping for.
Mr. Bombolini, Lebontaitaliane.com.