The best restaurants serving Fast food food in West Mainland Orkney Islands Highlands and Islands

I'm on Orkney for work with some spare time before flying home. On my way from Brodgar to Scapa I passed through Finnston and situated on a pretty bay with picnic tables is Leigh's van. "A real taste of Orkney", it says on the side. Wow. Beautiful friendly, chatty service. Good knowledge of the local produce and to top it all, the best sandwich I've ever had from a van. Have the steak rossinni burger. Again, wow.