The MD says they are waiting on equipment to arrive so they can expand their range of products.
The managing director of Glenisk says goodwill from suppliers has helped get production back up and running.
The dairy company's factory near Tullamore was destroyed in a fire last September.
Yoghurt production, at the facility in Killeigh, resumed this week following a small-scale refurbishment.
But Managing Director of Glenisk, Vincent Cleary, says global supply chain issues have limited the range of products they can produce: