Located on the first floor, The Yarn is next door to the Woollen Mills, their sister restaurant. This beautifully appointed room with its own cocktail and craft beer bar has access to the roof terrace.   The Yarn decided that there were enough fantastic pizza joints serving extraordinary Neapolitan pies, and that, actually, they wanted something a little easier to share, a little easier to pick up (as you wander onto the roof with a cocktail) and a little crisper.   TheTaste and The Yarn are offering readers a 2 course menu with a glass of craft beer for only €20 per person.     STARTERS   Antipasti: Mortadella, Speck, B