Whip the cream until semi-stiff. Put the minced meat, ground pork, pistachios and eggs into a large bowl and knead with the dough hooks of the hand mixer. Season the meat dough with salt, pepper and dried tarragon.
Line a terrine mould (1 litre capacity) with 2/3 of the bacon slices. Fill in half of the farce. Smooth out and spread the liver in the middle. Spread the rest of the farce on top and press down.
Cover with the remaining bacon slices. Cover and cook in a 2 cm high water bath (fat pan) in a preheated oven (electric cooker: 175 °C/ gas: level 2) for 1 1/2 hours. Remove the lid. Cover the surface with aluminium foil.
Weigh down with a board and weights. Put in a cool place overnight. Drain off any juice that has escaped. Soak gelatine in cold water. Heat the broth. Season with sherry, salt and pepper. Dissolve the gelatine in it.
Decorate the pâté with tarragon, chilli and peppercorns. Pour a little cooled broth on top. Let the remaining stock set and dice. Cut the pâté into slices and serve. Add jelly cubes and fresh salad.