Potato Dauphinoise

This is a really quick and easy way to make Dauphinoise.  I have tried the other method of using very thinly sliced raw potatoes but I find it just takes too long as you need to cook on a low temperature to avoid the starch curdling the cream.  By parboiling the potatoes first you avoid this and you can get fabulously creamy, garlicky potatoes in half the time. Also by heating the cream with the garlic, salt and pepper first you can check the seasoning before baking in the oven. Use waxy potatoes if possible as floury spuds will soak up all of the cream and become quite mushy.