Yellow Tail winemaker Casella Family Brands (CFB) has continued its premiumisation drive with the acquisition of South Australian winery Brand's Laira from McWilliam's Wines.

The transaction includes the purchase of the Brand's Laira intellectual property as well as its winery and cellar door in Coonawarra, one of Australia's leading regions for premium Cabernet Sauvignon and Shiraz. The price of the purchase was not disclosed.

CFB managing director John Casella said Brand's Laira perfectly complements the company's premium range of wines, which was previously expanded with its acquisition of Barossa Valley winery Peter Lehmann late last year.

"I believe we are well positioned to build on the investment McWilliam's Wines has made in Brand's Laira in the domestic and international markets, in particular by showcasing the excellent Cabernet Sauvignon wines for which the region and the brand are famous," he said.

McWilliam's CEO Rob Blackwell added: "The sale … is consistent with our objective of focusing resources on growing our core stable of brands, namely McWilliam's, Evans & Tate and Mount Pleasant. Under these labels, we will increase our marketing investments and continue to introduce new products in both Australia and international markets."

McWilliam's has upped its export focus recently, establishing its own distribution networks in the US and China, after exiting an agency arrangement with E&J Gallo last year.

The proceeds of the Coonawarra winery sale will be used by McWilliam's to retire some bank debt and fund a new bottling plant in Sydney.