Very important: use a big oven recipient. The potatoes have to be 2 cm thick. (1 inch) so as to have maximum crusty part/serving. Here I am using a round dish of 28 cm.
1 kg of potatoes
Double cream, nutmeg, salt and pepper
Peel and slice the potatoes as thin as you can. I used a mandoline. Or food processor or by hand.
Dispose the potatoes in a dish ( 26-30 cm) that can go to the table and may b to the microwave. Layer the sliced the potatoes.
Mix 500 gm of double cream + nutmeg, salt and pepper. Put over the potatoes
Bake at 180C 1:30 hr when cooked , sprinkle grated cheese on the top and gratinate under the grill 1-2 min until golden. Serve.
After 30 mins press the potatoes so as the liquid comes up to the surface to cover the potatoes
1 hr after.
When done sprinkle with grated cheese and bake 1 min under the grill
Out of the oven. Either you serve it immediately but you will have to use a spoon or....
Or you leave it to become cold so it holds together; you can cut it into wedges and you can easily reheat it in the oven or in the microwave...just before serving.
For a formal dinner I pre- cut the potato cake. Easier and quicker to serve. Heat it in the microwave just before eating