Glass Jar #2 by Jeff Hayes• Basics: Intro to Cooking: This class will introduce elements, tools, and principles of cooking, and participants will practice what they've learned in the preparation of a simple recipe. 7 p.m. on 5/21. Class is $45 at The Brooklyn Kitchen, 616 Lorimer St., Brooklyn. • Shad Fest: Join Riverkeeper for the Annual Shad Festival and Hudson River Celebration. The even begins at noon on 5/20. Tickets purchased online are $75. • Brooklyn Uncorked: Here's your chance sample the great wines produced by over 30 vineyards on the East End of Long Island accompanied by Long Island oysters and artisanal foods from Brooklyn and Long Island. 6 p.m. on 5/16 at BAM Cafe, 30 Lafayette Ave. Tickets are $30. • Slow Food's Carlo Petrini Festival: Carlo Petrini, the founder of Slow Food, will talk about his new book Slow Food Nation: Why Our Food Should Be Good, Clean and Fair at 7 p.m. on 5/15 at the American Museum of Natural History Central Park West at 79th Street. Tickets are $15.