Spirits giant Diageo has agreed to sell its 80.4% shareholding in Guinness Ghana to Castel Group for $81 million, it said on Tuesday, continuing to refine its operating model in Africa.

Drinks group Diageo is selling its subsidiary Guinness Ghana Breweries, days after denying reports that it was considering a sale of the entire Guinness brand. The London-listed company said on Monday it was selling its 80 per cent stake in the Ghana subsidiary to French wine group Castel,

Guinness brand owner Diageo says it has no intention of selling the high-performing stout, quashing rumors in the press over the last few days.

Guinness is an outlier in Diageo's business, which consists mostly of spirits rather than beer, but its performance recently has outshone that of key liquor labels, such as Johnnie Walker whisky.

Diageo is selling its 80.4% stake in Guinness Ghana Breweries to Castel Group, enhancing their African partnership. While the sale moves forward, Diageo retains ownership of the Guinness brand and other products.