In honor of Food Day—a national event that promotes healthy, affordable, and sustainable food—Harvard Square has partnered up with local restaurants to offer delicious events for foodies, health-conscious eaters, and sustainable diners alike.Starting at 5:30 p.m. on Wednesday, a total of nine restaurants—from b.good and Cardullo’s Gourmet Shoppe to Rialto and UpStairs on the Square—will set up tables on Brattle Plaza to serve sustainable bites to patrons for free.