Boil the eggs for 10 minutes in boiling water until hard. Rinse cold and peel. Cook rice in plenty of boiling salted water for about 20 minutes. Clean broccoli, divide into small florets and wash. Cook broccoli in boiling salted water for about 5 minutes.
Wash the salmon, dab dry and sprinkle with lemon juice. Heat the oil in a pan and fry the salmon in it for about 3 minutes. Season with salt and pepper. Melt the fat in a pot. Sauté the flour in it. Deglaze with stock and milk while stirring, bring to the boil and simmer for about 4 minutes at low heat. Stir in mustard. Season with salt and pepper. Pour broccoli on a sieve. Cut the eggs into slices and add to the sauce with the fish and broccoli.
Deglaze with stock and milk while stirring, bring to the boil and simmer for about 4 minutes at low heat. Stir in mustard. Season with salt and pepper. Pour broccoli on a sieve. Cut the eggs into slices and add to the sauce with the fish and broccoli. Pour rice on a sieve and drain. Arrange mustard ragout with the rice on plates