You'll need the following from Bottlemart:

   
• 2kg watermelon        
     
   
• 70g caster sugar        
     
   
• 125ml fresh lemon juice        
     
   
• 750ml chilled ginger ale        
     
   
• 375ml chilled vodka        
     
   
• 750ml chilled sparkling wine or prosecco        
     
   
• 1 bunch fresh mint        
     

Find out how to make it here