Thirty-One Main recently opened its doors at 31 Main Street in Ayer, MA. Thirty-One is owned by husband & wife team Mark and Karen Engle. The eclectic dinner menu features items as diverse as grilled lamb loin, Kansas City ribs and Jambalaya, all priced in the $14-$22 range. The eatery is open for breakfast, lunch and dinner. It is closed Mondays. 978-772-2233.