Peel and chop the shallots. Peel and finely dice the carrots. Clean, wash and chop the tomatoes. Basil, except for a few leaves for garnishing, wash and chop. Peel the prawns and remove the intestines.
Wash and slice the prawns. Heat the fat. Sauté the shallots and prawns for about 3 minutes, remove the prawns. Sauté shallots, carrots, tomatoes and basil in the frying fat. Deglaze with white wine. Cover and cook for about 10 minutes. Add stock and cream and bring to the boil. Pass through a sieve. Stir in the paste and cook again for about 5 minutes. Season to taste with salt and cayenne pepper.
Cover and cook for about 10 minutes. Add stock and cream and bring to the boil. Pass through a sieve. Stir in the paste and cook again for about 5 minutes. Season to taste with salt and cayenne pepper. Warm the prawns in it. Serve garnished with lemon and basil