MILL CITY MARKET: Third annual Trout Fest at 10 a.m. Saturday. Local chefs will share tips for cooking Star Prairie trout with fresh market ingredients. Live music will follow from 11 a.m. to 1 p.m., and a mini-fish farm with trout, ducks and geese will be held all day. Children are invited to stop next door at the Mill City Museum (10 a.m. to 5 p.m.) to check out exhibits, a water lab and the Bake lab. 8 a.m.-1 p.m. Mill City Farmers Market, by the Guthrie Theater (2nd St. and Chicago Av. S.) in Minneapolis. 612-341-7580;