For the pesto, finely chop the nuts. Wash the dill, shake dry and chop finely. Mix both with oil and season with salt and pepper.
For the soup, peel the shallots and garlic and dice everything finely. Melt crayfish soup paste and butter in a large pot. Sauté shallots and garlic over low heat. Dust with flour and briefly sauté lightly.
Add the stock, wine and 1 l water while stirring constantly, bring to the boil. Simmer for about 5 minutes. Season to taste with salt, pepper and sugar.
Whip the cream until semi-firm. Stir in the gin. Warm the prawns in the soup briefly. Serve soup with gin cream and dill pesto.