There are no Russians in Middle-earth, ergo there are no "white Russians"
Beer will probably be added eventually. For now we have Dwarven Beer.
I'm not entirely sure if there IS whiskey in Middle-earth.
This suggestion should be more detailed. What do you use to brew these new beverages? Where do you find them? Things like that
A White Russian is milk and vodka ,bleeck
Beer maybe mad from some plant and so one and so fort
What do you think?