“Louie” Bettencourt celebrates the opening of Idaho Milk Products’ new ice cream plant in Jerome during a ribbon-cutting ceremony in June. Bettencourt, along with Big Sky Dairies, Skyline Dairy and Crossbred Dairies, are partners in the new facility. Image by Walt Cooley. Idaho Milk Products opened a new milk processing plant in June with a ribbon-cutting ceremony and distinguished guests attending from around the state.