Peel and wash the potatoes and use a slicer to roughly grate them. Mix together with the egg and season with salt, pepper and nutmeg. Clean, wash and slice the mushrooms. Peel the onion and chop finely. Dice the lean bacon.
Heat some oil in a saucepan and sauté the onions and bacon in it. Now add the mushrooms and cook with them. Fill up with the cream and reduce it to a creamy consistency. Season to taste with salt and pepper.
Heat a little more oil in a pan and fry the potato mixture in equal portions, thinly distributed on both sides, for approx. 8 minutes until golden.
Put on a plate and cover with our cream mushrooms. Sprinkle with chives rolls.