A Cuban-inspired sandwich and a "batido", tropical shakes made with fresh fruit, sweetened milk, crushed ice, and the option of rum, being enjoyed al fresco outside Frita Batidos (117 W. Washington St.; 734-761-2882; www.fritabatidos.com), Friday, Sept. 2, 2011 in Ann Arbor, Mich. (Tony Ding for The New York Times)