Here's what's happening this weekend, events-wise, at Twin Cities farmers markets. For a map of metro-area markets, go here.

Saturday: A the Minneapolis Farmers Market, learn how to prepare salmon cakes with sweet potatoes (using fresh salmon caught by market vendor Matt Oxford of Wild Run Salmon) and a raspberry trifle, made using market-fresh raspberries. Natasha Singh will be the star in the demonstration booth, and, as always, the samples are free. 10:30 a.m.

Saturday: When it comes to this weekend's Mill City Farmers Market, go for the opera singing (courtesy of Minnesota Opera), stay for the Italian cooking demonstration with chef Nick Schneider and Andrea Scarpa, who will prepare dishes from the Emilia-Romagna region. 11 a.m.