Which ingredient changes Black Russian to white?

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Tags

1. #being
2. #cocktail
3. #addition
4. #appeared
5. #known
6. #white
7. #named
8. #russian
9. #vodka
10. #drink
11. #neither
12. #becomes
13. #first
14. #primary
15. #which
16. #ingredient
17. #cream
18. #black
19. #traditional
20. #origin