Peel, wash and finely dice the carrot. Peel and finely dice the onion. Heat butter in a large pot. Sauté carrot and onion. Dust with flour and sauté lightly. Fond, 3⁄8 l Stir in water and cream.
Stir in fish paste. Bring to the boil while stirring, cover and simmer for 6-8 minutes, stirring from time to time. Season to taste with salt and pepper.
Meanwhile, toast in the toaster, then dice. Finely dice the salmon. Wash the dill, shake dry and chop finely. Season soup with salt, pepper, lemon juice and 1 pinch of sugar. Heat dill and salmon briefly in the soup.
Dresser. Sprinkle with croutons.