Potato dauphinoise

This is one of Gordon Ramsay's recipe and I love it - Was a perfect treat for me last night after the horrendous fall :-)

For this creamy potato dauphinoise gratin, you need to buy a waxy variety that will retain its texture as it absorbs liquid. A traditional gratin is cooked entirely in the oven, but I prefer to simmer the potatoes first in milk on the hob, then finish the dish in the oven. This method cuts the cooking time and gives you a more dependable result. The potatoes should be of a similar size.

600g waxy potatoes (such as Maris Piper)
350ml milk
350ml double cream
1 large garlic clove, sliced
1 thyme sprig
1 bay leaf
90g Gruyère cheese, grated
Sea salt and freshly ground black pepper

1 Preheat the oven to 200C, Gas 6. Peel the potatoes thinly, then slice evenly into 1cm slices. Bring the milk and cream to the boil in a large saucepan and add the garlic, herbs and seasoning. Simmer for a couple of minutes.
2 Slide the potatoes into the pan and stir gently. Simmer for about 7 minutes until the potato slices are only just tender; they should hold their shape and retain a bite. Drain the par-cooked potatoes in a colander over a bowl to catch the milk.
3 Layer the potatoes in a shallow ovenproof dish, sprinkling two thirds of the cheese and seasoning in between the layers. Trickle a little of the saved milk over each layer too.
4 Pour a little more of the milk around the sides, but not too much - just enough to moisten. Sprinkle over the last of the cheese.
5 Place the dish in a shallow roasting tin and bake for about 10-15 minutes or until the cheese is beginning to bubble and turn golden brown. Allow to stand for 10 minutes before serving.