We've just discovered the Hidden Hut, had 'Sunday Soup' there on a walk along the coast to Portscatho. The soup was super :), served with delicious crusty homemade bread, lots of butter, an ample sufficiency. The Hidden Hut is obviously popular because even though you can only get to it on foot and it's not visible from anywhere except the sea, it was really busy and well frequented.
They also sell a lovely selection of original flavours of ice cream.
Altogether YUM. Oh, so long as you don't mind eating outside at solid hewn wooden tables, which I thought was great fun.