1 bulb of garlic, cut in half
150g/5½oz fine green beans, trimmed
1kg/2lb 4oz Maris piper potatoes, peeled and cut into chunks
200g/7oz shallots, peeled and cut in half
1 bunch fresh tarragon
500g/1lb 2oz wild mushrooms (chanterelles, girolles, ceps, button mushrooms morelles), cleaned
500ml/18fl oz dark chicken stock
salt and freshly ground black pepper
75ml/2½fl oz rapeseed oil
50g/1¾oz unsalted butter
150g/5½oz unsalted butter, plus extra for dressing the green beans
300ml/10½fl oz double cream
300ml/10½fl oz full-fat milk
1 large chicken, jointed into eight pieces
200g/7oz pancetta, diced
50ml/2fl oz Madeira