1 carrot, peeled and chopped
2 celery sticks, chopped
1 leek, cut into chunks, plus 4 leeks, sliced
1 onion, chopped
small bunch fresh flatleaf parsley, leaves picked and chopped
400g/14oz any seasonal greens, chopped
1 tbsp chopped fresh tarragon leaves
small bunch thyme or summer savoury
1 tbsp Dijon mustard
360²µ/12ΒΌ΄Η³ϊ plain flour, sifted, plus extra for dusting
5 bay leaves
salt and freshly ground black pepper
pinch salt
170g/5ΒΎoz unsalted butter, cold and cut into small, even pieces
100ml/3Β½fl oz double cream, plus 1 tsp to glaze
1 free-range egg yolk
60²µ/2ΒΌ΄Η³ϊ lard, cold and cut into small, even pieces
5 unsmoked streaky bacon rashers, chopped
1 small whole chicken
300ml/10fl oz white wine