Alsatian Potato Pie

Cover potatoes with water in a medium saucepan. Bring to a boil. Season water with salt; cook until just tender, 13 to 15 minutes. Drain, and let cool.

Bring 3/4 cup plus 3 tablespoons cream, the garlic, and nutmeg to a boil in a small saucepan. Cook mixture until reduced by half. Season with salt and pepper.

Melt butter in a skillet over medium heat. Add leek; cook, stirring occasionally, until softened, about 5 minutes. Remove from heat. Stir in parsley; season with salt and pepper.