Susan and Myron Levine of Sag Harbor will host a Slow Food East End potluck at their house on Aug. 17 from 6 to 8 p.m. Reservations are being taken online at slowfoodeastend.org. Karen Lee, a New York City caterer and cookbook author, will offer two cooking classes in Amagansett this month focusing on using organic and/or local ingredients to make tasty and healthful meals.