Just when you thought you couldn’t possibly stuff any more food and booze into your overindulged holiday belly, along comes the next installment in the Class in a Glass series at Piattini (162 Columbus Avenue, Boston). On December 4, at 6 pm, enjoy a four-course dinner along with sips of and commentary on the series’ latest subject: zinfandel. The cost is $40, excluding tax and gratuity; call 617.423.2021 for reservations and information.