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          For the base: 
          40 g/2 tbsp clear honey 
          50 g/2 oz demerara sugar 
          225 g/8 oz/2 cups rolled oats 
          100 g/4 oz 14 cup butter or margarine, melted 
  
          For the filling: 
          225 g/8 oz/1 cup quark 
          250 ml/8 fl oz/1 cup plain yoghurt 
          2 eggs, separated 
          50 g/2 oz/14 cup caster (superfine) sugar 
          Grated rind and juice of 2 limes 
          15 g/1 tbsp powdered gelatine 
          30 ml/2 tbsp boiling water  | 
        
        
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          Method: 
          
          Stir the honey, demerara sugar and oats 
          into the butter or margarine. Press into the base of a greased 20 cm/8 
          in cake tin (pan). 
          
           
          To make the filling, mix together the quark, yoghurt, egg yolks, sugar 
          and lime rind. Sprinkle the gelatine on the lime juice and hot water 
          and leave until dissolved. Warm over a bowl of hot water until 
          transparent, then stir into the mixture and stir gently until 
          beginning to set. Whisk the egg whites until they form soft peaks, 
          then fold into the mixture. Spoon over the prepared base and leave to 
          set. 
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