Don Sebastiani & Sons has completed a production upgrade at its Napa Valley winery to keep pace with demand in the business-to-business market.

The “major” investment includes a new bottling line that will give clients a choice of packaging options, including a three-litre bag-in-a-box, the California-based family-owned winery said today (27 November). Precise financial details of the investment were not disclosed.

The bottling line can also handle a number of wine closures, including natural and synthetic cork, screwcap and Zork, the company said.

"With the rapid growth of custom services over the past three years, we needed to build a better facility that would help us cultivate this expanding part of our business," said John Nicolette, Don Sebastiani's director of operations. “(The plant) provides the perfect location for us to enhance our custom service offerings and strengthen our client relationships at the same time.”

Meanwhile, energy savings will cut overheads by at least US$10,000 a year, the company said..

Last week, fellow Californian winery Foley Family Wines said it is extending its presence in the state with the purchase of Ramal East Vineyard.