Bross Bagels is a Portobello success story. From the one outlet on Porty High Street, the company has now expanded across Edinburgh. And the next stage in its story is about to begin as they plan to move into the former premises of the Royal Bank of Scotland on the main road. But founder Larah Bross is not funding this in a conventional way. Instead, she has launched a crowdfunding campaign, one which has exceeded her expectations, as Porty Podcast Producer David Calder's been finding out.