Halve the fillets lengthways, sever the legs at the joint. Heat the butter in a pan and fry the meat strips / pieces of meat over high heat. Reduce the temperature and season with salt and paprika.
Add tomatoes, chopped garlic, chilli pepper and Noilly Prat and let simmer covered for 20 minutes (30-40 minutes for thighs).
Remove the lid, add the thyme and let it simmer with the cream and créme fraîche (remove the meat and keep it warm).