University of Maine Cooperative Extension has released the eighth installment of “Growing Maine,” a series of short documentaries highlighting Maine food producers and farm families. The newest video tells the story of Balfour Farm in Pittsfield, a MOFGA-certified organic dairy farm producing cheese and yogurt.    Heather and Doug Donahue, farmers for 18 years, moved to read more ‘Growing Maine’ explores keys to success of Pittsfield couple’s dairy business