Pork Gratin Dauphinois

Ingredients

• 1 lb 454 g Quebec pork leg cutlet (or leftover minced pork roast)
• 5 lb 2.25 kg Yukon Gold potatoes, peeled and cut into ¼-cm (⅛-in.) thick slices
• 4 cups 1 L milk
• 2 cloves garlic, smashed
• 2 tbsp. 30 ml butter
• 1 tbsp. 15 ml oil
• 1 cup 250 ml 35% or 15% cooking cream
• 1/4 tsp. 1 ml ground nutmeg (optional)
• Knobs of cold butter, to taste
• Salt and freshly ground pepper, to taste