Piano man's plans: After 26 years, more than 5,000 shows and countless entertained fans, "Diamond" Dave Hosley is moving on from Petar's in Lafayette after the venerable restaurant and lounge closed its doors earlier this month. The singer and keyboardist who's known for seamlessly moving from such soft-rock standards as "Sweet Caroline" to a hilarious take on "Baby Got Back," already has a gig lined up at Dan's Irish Sports Bar in downtown Walnut Creek. Owner Saul Tallarico plans to turn Thursdays into Diamond Dave nights, starting in February. Longtime Thursday performers and the 1980s cover band The Spazmatics will move to one-off weekend shows. For more on Diamond Dave, go to www.davehosley.com or Facebook.com/diamonddavehosley. Dan's is at 1524 Civic Drive; www.dansbar.com.

-- Tim O'Rourke, staff

Hot dog! Knockwurst, Nuernberger bratwurst, merguez -- we're about to swoon. San Francisco's popular sausage grill, Rosamunde, opened its Oakland outpost in the historic Swan's Marketplace last week with a menu that features 16 craft brews, sausages, German potato salad and all the things that make our Bavarian hearts go pitter-pat. Three kinds of vegan sausages are available, too, and everything's in the $6-$6.50 range. The new place is open from 11 a.m. to 10 p.m. daily; until 11 p.m. Thursdays through Saturdays. Find it at 911 Washington St.; http://rosamundesausagegrill.com.


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Food meets art: Wondering what happens when food trucks invade an art gallery? The Oakland Museum of California is about to find out when Friday Nights at OMCA launches Jan. 25 with an Off the Grid component. Off the Grid: Lake Merritt@OMCA -- a bit of a punctuation mouthful, to be sure -- will be back Fridays from 5 to 9 p.m. with assorted street food trucks serving noshes, the museum's Blue Oak cafe doing a cash bar, plus half-price museum admission, free films and live music. Details: 1000 Oak St., a block from Lake Merritt BART; museumca.org.

Send your Bay Area restaurant tips to food editor Jackie Burrell, jburrell@bayareanewsgroup.com.