In a corner table of Brasserie Sixty6, Dylan McGrath is sipping a cup of coffee. McGrath has that fiery energy that saw him burst onto the Dublin dining scene in 2008 when his former restaurant in Ranelagh earned a Michelin star just as the Celtic Tiger ended. It is a passion that has kept him at the top of the industry over the last 15 years as the creative force behind Fade Street Social, Rustic Stone, and the restaurant where we are now meeting. For the last year, McGrath has been battling to restructure Brasserie Sixty6 under the small company…