Prepare 400 g turnips, cut into medium-sized pieces and set aside.
2: Prepare 6 purples globe artichokes and cut in half lengthways.
3: Bring a large pan of salted water to the boil, then blanch the turnips for 1 or 2 minutes.
4: Remove the turnips from the pan, drain, then cool under the cold tap.
5: Using the same pan of boiling water, blanch the artichokes for 2 or 3 minutes.
6: Drain them. Your vegetables are ready - these can be prepared in advance, even a few days ahead.
7:
Roast the pork in the bag
Preheat the oven to 300°F (150°C). Salt and pepper the joint of pork - this is a nice piece of tenderloin.
8: Put the pork into a cooking bag with 1 handful sage and seal.
9: Cook in the oven for 3 or 4 hours at 300°F (150°C).After this time, the roast should have a good crusty top, be meltingly soft ("confit") inside...
10: ...and have produced delicious meat juices which are far too good to throw away.
11:
Braise the vegetables
Melt 30 g butter in a large saucepan on medium heat. When really hot, add the vegetables, salt and pepper, then mix well. Cook for 2 or 3 minutes until just starting to colour.
12: Add the meat juices and turn the heat down to its lowest. Leave uncovered to braise gently for 10 minutes.
13: Meanwhile, slice the meat thickly with a serrrated knife.
14: Lay the slices of meat on top of the vegetables towards the end of cooking, cover and leave for 5 minutes for the meat to heat through. Heat the plates.
15: Sit the meat on a bed of braised vegetables and pour a little of the cooking juices over. Serve immediately.
Remarks
It you don't have much cooking liquid left at stage 12, you can add a little chicken stock or other meat juices. Or if the worst comes to the worst, just add a little water.