“Fermented Foods,” hands-on demo with Simon Frost of Thirty Acre Farm, Winslow Public Library. 873-7404. 5:30 to 7:30 p.m. today.

30th Annual MLK Celebration Dinner, interactive NAACP dinner with keynote address and youth MCs remembering Dr. Martin Luther King Jr. and discussing ways to alleviate poverty in our communities. Holiday Inn By the Bay, Portland. $75. Order in advance online (www.portlandMLK.net); tickets will not be sold at the door. 5 p.m. reception; 6 p.m. dinner Sunday.

Community dinner, turkey with the fixings or spaghetti and meatballs, Lions Club of Old Orchard Beach. Free. ooblionsclub.com. 3 to 6 p.m. Sunday.

Martin Luther King Jr. First Parish Breakfast, community breakfast with music and speakers; benefits the Committee for Diverse Learning in the Kennebunk Elementary and middle schools. First Parish Unitarian Universalist Church, Portland. $10. 985-3700. 8:30 a.m. Monday.