Preheat the oven to 180ºC/350ºF/ Gas Mark 4. Lightly oil a 900ml loaf tin. Heat the oil in a pan and cook the chicken livers over a medium heat for about 2-5 minutes, stirring occasionally, until sealed. Remove from the heat and allow to cool.
Using the back of a knife, stretch the bacon. Line the base and sides of the tin with overlapping slices of bacon, allowing any excess to hang over the edges. .Mix together the chicken livers, pork, cheese, red wine, port, thyme, parsley, juniper berries, pistachio nuts and lemon rind. Season well.
Spread half of the pork mixture over the base of the terrine evenly, pressing down well. Top with a layer of ham and then spread over the remaining pork mixture – it will sit high in the loaf tin. Fold over the overhanging bacon to enclose the filling well. Cover with foil, then place in a roasting tin and half fill with boiling water.
Bake for 1 hour until the meat is tender. Remove from the oven and allow to cool. Pour off any juices and weigh down with weights. Chill for at least 6 hours. Carefully remove from the tin and garnish with sage leaves. Serve in slices with a dressed salad and a favourite chutney.