Make the dough by mixing all the ingredients together except for the potatoes.
Once fully mixed, leave in a bowl to double in size.
Remove from the bowl and flatten with your hands, brush with olive oil and make indentations with your fingers.
Layer your potatoes over the top and sprinkle with a little rock salt.
Leave to rise on a baking sheet for 1 hour and bake in an oven set at 230C/450F/Gas 8 and bake for 30 minutes. Once cooked, remove from the oven and brush the loaf with more olive oil and serve when cooled.