This spin on a classic White Russian includes a cola float on top of the cocktail giving it a texture similar to a root beer float. I prefer to use homemade coffee liqueur (recipe link in ingredients list) which is great to have on hand.
Fill and Old Fashioned (or 'rocks') glass with ice. Add the vodka and coffee liqueur; stir. Pour in the Half and Half and add cola to float on top.
Shaker method: add the vodka and coffee liqueur to a shaker with a cup of ice; shake and strain into an Old Fashioned glass with fresh ice. Proceed with cocktail method above.