Bittersweet 5427 College Ave./Taft St.; Rockridge. This friendly cafe is famous for really good hot chocolate. Choose from a blend of dark chocolates, a classic sweet milk chocolate, a spicy chili version, and a sweeter one especially for kids. And don’t overlook the chocolate chai. Want something cold? Try chocolate Thai iced tea or an old-fashioned chocolate milk. Seating is limited to a few communal tables inside and benches outside, but everything is easy to carry away. Some baked goods and an array of chocolate bars from around the world are also available.