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      225 g/8 oz Shortcrust Pastry 
      
      15 ml/1 tbsp oil 
      1 onion, chopped 
      2 leeks, chopped 
      3 bacon rashers (slices), chopped 
      
      100 g/4 oz mushrooms, sliced 
      
      450 g/1 lb pork sausage meat 
      
      5 ml/1 tsp Dijon mustard 
      
      15 ml/1 tbsp chopped parsley 
      Salt and freshly ground black pepper 
      
      2 eggs, beaten 
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