Old MacDonald's Potato Box Recipes 

Purple Potato Gratin

Ingredients

1 tbsp unsalted butter
1 garlic clove
225ml/7fl oz double cream
freshly grated nutmeg
sea salt and freshly ground pepper
700g/1½lb purple potatoes (also known as Shetland black vintage)

Directions

1. Preheat the oven to 220C/400F/Gas6.
2. With the flat side of a heavy knife lightly crush the garlic and rub over the bottom and sides of a gratin dish. Brush the bottom and sides of the dish generously with butter.
3. In a small bowl stir together the cream, nutmeg, sea salt and pepper to taste.
4. Peel the potatoes and slice thinly with a mandolin or food processor. Arrange the sliced potatoes in the gratin dish and pour the cream evenly over. Press gently on top of the potatoes to briefly submerge them in the cream.
5. Bake the gratin, covered with foil, in the middle of the oven for 20 minutes (15 minutes if fan-assisted). Remove the foil and bake the gratin until the potatoes are tender and lightly browned, about 25 minutes more (20 minutes if fan-assisted).