Step 1

Preheat the oven to 220°C.

Step 2

Place butter and oil in a non-stick frying pan over medium heat. Add chicken and brown for 2 minutes each side until golden. Transfer to a medium baking dish (it is important that the pan is big enough so that there is plenty of room).

Step 3

Add potatoes to the frying pan and cook until light golden. (They don't need to be cooked through yet.) Arrange them around the chicken with the garlic and eschallots. Squeeze lemon over the chicken and season. Sprinkle over half the tarragon and roast in the oven for 30 minutes. Transfer the chicken and vegetables to a serving platter.

Step 4

Place the roasting pan on the stovetop over medium heat. Add the wine, stock and mustard and cook, stirring, for 3-4 minutes until reduced. Pour over the chicken and garnish with remaining tarragon. Serve with a green salad.