Pour milk and cream into a saucepan, add garlic cloves, grated nutmeg and thyme sprigs. Bring to a boil over low heat
Peel and thinly slice potatoes (you can use a mandolin or the slicing attachment on a food processor). Add the potatoes to the heated cream mixture.
Simmer for 6-7 mins, stirring occasionally until the potatoes arout of the pan and arrange them in the baking dish. Sprinkle over a little grated cheese
Repeat until you've run out of potatoes. Finish with a layer cheese
Place in the oven 180 degrees and bake for 45-60 minutes, until the cheese is golden.