Bring the millet and 1/2 litre of stock to the boil in a saucepan, turn off the heat and leave the covered millet to swell for 15-20 minutes. In the meantime peel, wash and cut carrots into small cubes. Cook for about 5 minutes in salted water, then drain on a sieve. Clean the savoy cabbage, remove 8 large leaves and blanch in boiling water for 3 minutes. Take out and let cool down. (Use the rest of the cabbage for other purposes.) Leave the millet to cool slightly. Stir in carrots and egg.
Season to taste with salt and pepper. Spread the millet filling on the savoy cabbage leaves. Roll up into roulades and put a wooden skewer on each. Heat the fat in a saucepan. Fry the savoy cabbage rolls lightly in it. Deglaze with 1/2 litre stock. Cover and cook the savoy cabbage rolls over medium heat for 20-30 minutes. Remove and keep warm. Pour in the remaining stock and let it boil down a little. Stir in crème fraiche. Season to taste with a little salt and pepper. Stir in the sauce thickener, bring to the boil again.
Cover and cook the savoy cabbage rolls over medium heat for 20-30 minutes. Remove and keep warm. Pour in the remaining stock and let it boil down a little. Stir in crème fraiche. Season to taste with a little salt and pepper. Stir in the sauce thickener, bring to the boil again. Serve together with the savoy cabbage rolls. Boiled potatoes taste good with it