Irish whiskey producer Teeling has released the fourth and final expression in its Brabazon single malt series.Brabazon Bottling, Series 4 was made using barrels that once held a ‘long forgotten historical style’ of Port – Carcavelos. Carcavelos is a style of Portuguese fortified wine that dates back to the 18th century, and was historically produced just outside of Lisbon. The rare Port barrels were filled with Teeling single malt, which was distilled in 2007, and left to mature for more than two years. The final 13-year-old single malt is said to have soft citrus fruit flavours and a ‘distinctive, effervesce-style spice’. With an ABV of 49.5%, Brabazon Bottling, Series 4 is limited to 10,000 bottles. Jack Teeling, founder and managing director of Teeling whiskey, said: “Our aim with our Brabazon bottling series is to create full-bodied tasting experiences for people who enjoy the added complexity and taste that fortified wine maturation imparts. “We now complete the series with our final bottling, this time using barrels previously used for a rare white Port, which produces a very unique expression of Teeling and Irish whiskey. “This is a fitting end to our award-winning series, which celebrates the combination of old and new as well as highlighting our unique approach to making Irish whiskey and our spirit of innovation.” In October last year, Dublin-based Teeling released its first peated single malt Irish whiskey, called Blackpitts. The release was followed by the launch of a ginger beer cask-finished expression in November 2020, created in partnership with London's Umbrella Brewing company.