POTSDAM — Cooking classes will be offered at the Potsdam Public Library, 2 Park St., from 6 to 7 p.m. Classes will be held March 20, 27, and April 3, 10, 17 and 24. Each week a new recipe will be tried and attendees can take home the recipe and try a sample. Admission is free. The program is being run by the Cornell Cooperative Extension. Info or register: 315-265-7230.