Greggs is moving from pastries to pints as it is set to open its first pub this weekend.Named The Golden Flake Tavern, the pub will serve exclusive beers and a menu featuring its classic bakes and sausage rolls.Two exclusive beers on draft – the Pink Jammie Pale Ale and the Gosforth 1939 Stottie Lager – have both been developed in partnership with the Newcastle-based Full Circle Brew Co for the opening.