Despatch the crawfish in the way recommended on page 113. Chop it in two lengthways with a cleaver. Remove the sac from the head.
Melt the butter with the chopped shallot in a large sauté pan, and when the shallot has softened, add the paprika, mixing it in well to break up any little lumps. Stir in the tomato puree. Place the pieces of crawfish, flesh downward