Ingredients 1 kg loose white potatoes , russet 1 tbsp olive oil 300 ml whole milk 200 g unsalted butter 200 ml vegetable oil 50 g horseradish sauce 1 kg loose white potatoes , extra large 50 g beef dripping 500 ml beef stock 4 cloves garlic 2 sprigs thyme 1 sprig rosemary 20 g unsalted butter 100 ml demi-glace 200 g chard 1 lemon | Method
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