Step 1

Preheat the oven to 160C/140C Fan/Gas 2.

Step 2

Place the potato slices and grated garlic in a bowl and season to taste. Pour over the cream and mix well. Pour into a large gratin dish.

Step 3

Press the potato down with the back of a spoon or your hands so it forms a solid layer. The cream should come to just below the top layer of potato, top up with more double cream if necessary.

Step 4

Bake for 1-1½ hours, or until the potatoes are completely tender.