Clean, wash and halve the mushrooms. Peel onion and garlic and chop finely. Heat 2 tablespoons of clarified butter in a large pan. Fry the gnocchi for about 5 minutes while turning and take them out.
Heat 1 tablespoon of clarified butter in a frying pan. Sauté the mushrooms well in it. Add onion and garlic and fry briefly. Season with salt and pepper. Dust the mushrooms with flour and sauté. Deglaze with cream and 250 ml water, bring to the boil. Stir in broth. Add frozen spinach, bring to the boil while stirring. Simmer for about 5 minutes.
Pluck the smoked salmon into pieces. Season mushroom sauce with salt, pepper and nutmeg. Fold in gnocchi and salmon and heat up briefly.