1. Wash blueberries and control dry water
2. Put it in the ice cube tray
3. Pour the soda water slowly into the ice tray
4. Put in the refrigerator to freeze
5. Remove small ice cubes
6. Put the lime rum cocktail in the glass
7. Put ice cubes in the cup
Tips:If you want a cooler taste, you can put the cocktail in the refrigerator freezer and then put it in ice cubes.
