Growing up in a big Greek family means one thing: Sundays consist of gathering around Yiayia’s table with the extended family… and eating. The menu my 90 year-old grandmother cooks varies week-to-week, but some of the usual suspects are: lemony potatoes, homemade bread, homemade hummus, baked eggplant, some sort of legume dish to cater to the vego family members, slow-roasted lamb or chicken and, of course, spanakopita. Pastitsio and moussaka only make an appearance on very special…