Upstairs on the Square in Harvard Square will be the site of a Food Preservation Talk and Afternoon Tea with Eugenia Bone, author of Well-Preserved: Recipes and Techniques for Putting Up Small Batches of Seasonal Foods. Enjoy a casual discussion with Eugenia over afternoon tea. All ticket holders will receive an autographed copy of the book. $40. For details and tickets, log on to http://www.ediblecommunities.com.boston/events/eugenia-bone-event.htm.