Wash the salmon, dab dry and cut into strips about 1 cm wide. Marinate with salt and lemon juice. For the sauce, peel onion and lard with bay leaf and cloves. Melt 60 g fat, stir in flour and sweat for about 1 minute. Remove the pot from the stove. Bring milk to the boil, add onion and simmer for about 5 minutes.
Pour the milk through a sieve and quickly pour it into the roux while stirring. Bring to the boil and simmer for 2 minutes, stirring continuously. Season to taste with salt, pepper and nutmeg. Whisk the egg yolks and cream and stir into the hot, no longer boiling sauce. Add 150 g cheese and stir in. Cover sauce with foil. Sort the spinach, clean if necessary and wash thoroughly. Peel shallots and garlic and cut into fine cubes. Heat 1 tablespoon of fat, sauté shallots and garlic until translucent, add spinach and steam for about 3 minutes. Grease an oven dish (approx. 2 litres capacity) and layer sauce, lasagne dishes, sauce, spinach and salmon one after the other. Repeat the process and finish with a layer of lasagne plates and sauce.
Cover sauce with foil. Sort the spinach, clean if necessary and wash thoroughly. Peel shallots and garlic and cut into fine cubes. Heat 1 tablespoon of fat, sauté shallots and garlic until translucent, add spinach and steam for about 3 minutes. Grease an oven dish (approx. 2 litres capacity) and layer sauce, lasagne dishes, sauce, spinach and salmon one after the other. Repeat the process and finish with a layer of lasagne plates and sauce. Sprinkle with 50 g cheese and cook in the preheated oven (electric cooker: 175 °C/ convection oven: 150 °C/ gas: level 2) for approx. 30 minutes. Garnish with dill
With 6 people: