Join the Culinary Guild of New England on Tuesday, January 21 for a mozzarella-making demonstration and tasting at Fiore Di Nonno in Somerville.  Lourdes Smith is opening her award-winning shop’s doors to CGNE members and friends, to share her family’s secret to delicious, homemade mozzarella.  At this exclusive event, Smith and her fellow cheesemakers will share techniques learned from Smith’s grandfather, which have been perfected over many years.  Two batches of mozzarella will be made, which will then be enjoyed with some freshly baked bread and wine. Fiore Di Nonno is located at 561 Windsor Street, B-305 in Somerville.   $20 fee.  Sign up here.