It was named after Ireland’s only indigenous frog. Now, Natterjack, an Irish whiskey start-up, has sought bankruptcy protection from its creditors as part of a plan to rescue the business. Shane McCarthy, a restructuring partner with KPMG, has been installed as interim examiner to Gortinore Distillery Ltd, which owns two whiskey products which retail under the Natterjack brand. The application was made in the High Court on Friday. AMOSS solicitors represents the company. Gortinore was founded by Aidan Mehigan, who worked as a hedge fund manager in London from 2003 until 2015. He returned home to Ireland to start a distillery…