Cut the chicken into pieces. Peel and thinly slice the onion, peel and slice the carrots.
Sauté the chicken in 50 g butter, add the mustard, salt and pepper. Once the meat is golden, take off the cooker.
Over high heat, sauté the onion and carrots in 30 g butter. Add to the chicken, pour in the red ale, mix and simmer with a lid o ver low heat for 40 min.
Once cooked, add the double cream and mix. Check the seasoning before serving.