Brian Mark: Chicken Stock

Ingredients

• 1 soup hen
• A bit of extra chicken skin
• 1 large white onion, roughly chopped
• 1/3 celeriac, roughly chopped
• 2 large carrots, roughly chopped
• 1/2 large leek, the white part, cut into large pieces
• 100 g flat-leaf parsley with stems
• 20 g fresh thyme
• 20 g dried coriander seeds
• 20 g black peppercorns
• 20 g green peppercorns
• Water