Preparation
Preheat the oven to 220°C (200°C fan, gas 7). Wash and peel the potatoes and cut into 3mm thick slices.
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Halve the leek lengthwise, wash well, shake dry and slice.
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Finely grate the cheese.
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Heat the milk with the cream, salt, pepper and nutmeg in a saucepan until just boiling. Peel and crush the garlic clove and add to the pan. Add the potato slices and simmer for about 10 minutes, stirring occasionally.
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Dice the ham and place in a bowl with the leek. Remove the potatoes from the pan with a slotted spoon and add to the leek and ham.
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Mix together gently and spread out a buttered baking dish.
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Spoon over the milk and cream mixture with a ladle.
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Sprinkle with grated cheese and top with small pieces of butter. Bake in the preheated oven for 20 minutes until golden brown on top.
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