An ice cream festival takes over Smorgasburg, situated on the East River waterfront between North Sixth and Seventh Streets, in Williamsburg, Brooklyn, 11 a.m. to 6 p.m. on Saturday. Kosher frozen treats by Chozen to Mexican paletas are among the offerings; there will also be a bicycle churning ice cream in a wooden bucket. For those interested in learning how to make ice cream, the pastry chef Megan Fitzroy of Torrisi Italian Specialties is leading a class at 2 p.m. on Sunday at The Brooklyn Kitchen, 100 Frost Street (Meeker Avenue), also in Williamsburg. Tickets are $55. A day full of tastings at the Great Hot Dog Cookoff kicks off at 2 p.m. on Saturday in Williamsburg, Brooklyn, at 630 Flushing Avenue (Tompkins Avenue). Tickets, starting at $45, include food and beer. Proceeds from the event benefit the Food Bank for New York City. A master chocolatier at Neuhaus, 500 Madison Avenue (between 52nd and 53rd Streets), in Midtown East, leads a live demo and free tasting on Saturday from 2:30 to 5 p.m. Special Belgian biscuits will be hand dipped in dark chocolate and a commemorative box of chocolates with the colors of the Belgian flag will be on sale. An overnight culinary cookout takes place at the Queens County Farm Museum, 73-50 Little Neck Parkway, in Floral Park, Queens, starting 6 p.m. Saturday to 10 a.m. Brooklyn Brewery, Dickson's Farmstead Meats and the Cleaver Company are partners with the museum for the event, which includes dishes using vegetables grown on the property. Tickets, available online, are $75 per person. Guests have to bring their own tents. Michael Proietti, a contestant on "The Next Food Network Star," hosts a clambake on City Island from noon to 2 p.m. on Sunday. The event is B.Y.O.B. but ice tea and water are provided. Tickets are $75 per person. Les Salonnieres gives a potluck with a country blues theme on Sunday in Williamsburg, Brooklyn. Dinner, which includes a wine tasting, is from 7 to 9 p.m., with a party afterward. Guests should bring a dish to share. There will be live music and handmade cigars for sale. To reserve a spot, tickets are $10 online; the exact location will be e-mailed a day before the party. The Fairway Market, 485-500 Van Brunt Street, in Red Hook, Brooklyn, has opened a patio grill on the waterfront for the weekends. A classic barbecue menu will be served from noon to 8 p.m.