Trim any excess fat from round the outside of the tenderloins. Squeeze the juice from 4 clementines into a casserole dish. Stir in a tablespoon of honey (Acacia works best), a tablespoon of soy sauce and about one teaspoon of freshly ground ginger. Mix together and add the tenderloins. Leave to marinate, turning regularly. (Minimum one hour)
Heat a tablespoon of butter and one of olive oil in an ovenproof dish (or Dutch Oven) and brown the tenderloins on all sides. Add the marinade sauce and 2 shallots finely chopped. Peel 6 clementines and add (whole) to the pan. Cover and simmer on low heat for 15-20 minutes.
Serve (along with the clementines) with basmati rice or mashed potatoes, for a delicious meal. (You can serve with carrots if you like the colour orange!)