Potlucks are the friendliest of gatherings. As guests take part in the festivities, sharing their contributions-a dish of pasta, a bottle of wine, a bunch of wildflowers-they share a bit of themselves. Author Tamara Weiss knows this well. A self-described "organizer, assembler, and table setter," she has all the qualities of the consummate host, as well as years of experience attending and planning potlucks. InPotluck at Midnight Farm, Tamara has...