2) Drain the potatoes and place them back into the pan. Using a fork roughly mash up, leaving nice big potato chunks. Mix in the grated cheese, double cream, butter and black pepper.
3) Take a foil lined baking sheet and place 4 (5cm) rings on top. Fill each ring with potato mixture and place in oven for 20 minutes until the top is nice and golden brown.
4) Using a wide spatula, transfer a ring of potatoes to each plate. Holding the edge of the hot ring with a kitchen towel, cut around the potatoes to loosen them. Remove the ring and serve hot.