Preparation
Preheat the oven to 200°C (180°C fan, gas 6). Let the puff pastry thaw. Peel and slice the carrots.
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Wash and quarter the apple, core and slice.
Peel and slice a shallot and the garlic.
Mix altogether in a roasting tin.
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Pour in the wine and add the berries.
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Place the meat in the marinade. Cover and leave to marinate for 24 hours. Turn halfway through.
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Clean and dice the button mushrooms.
Peel and chop the second shallot.
Saute in a hot pan in 1 tbsp oil until softened. Add the mushrooms and cook until the liquid evaporates. Remove from the heat, mix in the parsley and season with salt and pepper.
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Crush the pepper in the mortar and spread out on a plate. Remove the meat from the marinade, pat dry and brown all over in a hot pan in the remaining oil. Turn in the pepper to coat.
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Unroll the puff pastry and spread the centre with some goose liver.
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Spread over about a third of the mushrooms.
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Place the meat on top and spread with the remaining goose liver. Place the remaining mushrooms on top and lightly press on all sides.
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Brush the pastry edges with the beaten egg.
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Fold the pastry over the meat and press the edges well to seal.
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Brush with the remaining egg and bake in the oven for 45 minutes until golden brown. Remove from the oven, leave to stand for a few minutes, cut into slices and serve with red cabbage and berries.
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