Tarragon chicken
This is made possible by BBC Food! Ingredients 2 tbsp butter 3 tbsp olive oil 8 chicken thighs, bone in and skin removed 6 garlic cloves, sliced in half lengthways 4 large shallots, peeled and finely sliced 8 rashers smoked streaky bacon, rind removed and sliced into 2cm/¾in pieces 280g/10oz chestnut mushrooms, roughly chopped 400ml/14fl…