Rinse guinea fowl cold and pat dry. Divide into 6-8 portion pieces. Season with salt and pepper and fry well all around in hot fat. Peel carrots and shallots. Cut the carrots into pieces, halve the shallots if necessary.
Wash and clean the mushrooms and possibly halve them. Pluck the thyme and marjoram leaves from the stalks. Place guinea fowl pieces on a fat pan of the oven. Arrange carrots, shallots, mushrooms, herbs and bay leaves around the chicken.
Pour in broth and wine and braise in the preheated oven (electric cooker: 200°C/ gas: level 3) for 30-40 minutes. Peel and wash the potatoes and cut them into large pieces. Fry in hot oil while turning for about 15 minutes.
Season with salt. Finally, stir the double cream into the guinea fowl stock. Season if necessary. Arrange on a plate together with the potatoes.