Masterstock Poached Chicken

• 2 litres (70 fl oz/8 cups) Chicken Stock

To make the masterstock poaching liquid, combine all the ingredients, except the chicken, in a large pot. Bring to the boil, skimming the surface if necessary, then reduce the heat to very low and cook for 2 hours. Take the pot off the heat and strain the liquid through a sieve lined with muslin cloth. Discard the solids and return the liquid to a clean saucepan large enough to poach the chicke