On a sunny afternoon in Tuscany this past September, approximately 40 people sat along a narrow table under a leafy pergola, dripping with red grapes. On one end, friends, couples, family, and strangers chatted with the matriarch of this hillside estate, Sarah Sesti and her daughter Elisa. Way over on the other end sat a group of eight men, who occasionally burst into an Italian yodel—only taking breaks to sip a Sangiovese or tuck into a bowl of gnocchi…