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      50 g/2 oz/0.5 cup plain (semi-sweet) chocolate 
      30 ml/2 tbsp water 
      25 g/1 oz/2 tbsp caster (superfine) sugar 
      
      2.5 ml/0.5 tsp vanilla essence (extract) 
      
      600 ml/1 pt/2.5 cups double (heavy) cream, whipped 
      25 g/1 oz/0.25 cup flaked (slivered) almonds, toasted 
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