In the hot Sacramento summer, knowing how to make ice cream may come in handy when trying to cool off. Thankfully, that’s exactly what was on the agenda for Ginger Elizabeth Hahn’s summer class last Saturday. Thirty-five students gathered at Ginger Elizabeth Chocolates — Hahn’s boutique — which offers classes for $35 per person. The class was located at the 1818 L St. Lofts penthouse kitchen across the street. Hahn, a chocolatier, taught two sold-out classes that day. She first told the class of her training, which includes the Culinary Institute of America in New York. She has worked with world-renowned chocolatiers such as Jacques Torres and pastry chef En-Ming Hsu and had the chance