Soak the morels in cold water for about 1 hour. Peel and wash the carrots and cut them into diagonal slices. Wash and peel the asparagus and cut off the woody ends. Cut the asparagus into pieces.
Clean, peel and slice the fairy tubs. Cook the prepared vegetables in about 2 l boiling salted water with 1 teaspoon sugar for 10-12 minutes. Pour off, catching the vegetable water. Drain morels and rinse thoroughly.
Heat the butter in a large pot. Add tomato paste and sauté briefly. Dust with flour and sauté briefly. Add vegetable water while stirring.
Bring to the boil and simmer for about 5 minutes. Add frozen peas and morels and simmer for about 5 minutes. Heat the prepared vegetables in the sauce. Season to taste with salt and pepper.