St. Patrick’s Day fare can be about more than green beer and corned beef and cabbage. Or green beads … what’s with that trend? Anyway, this Sunday, try your hand at Chef Cathal Armstrong Shepherd Pie. Of course, something green, such as Eli and Andrea Kirshtein’s Green Bean Casserole, is a necessity. And if a Guinness doesn’t suit you, end the night with Roger Gelis’s Best of All, a cider with a twist.