Every Irish Black Russian on the internet had the exact same recipe except
some recipes used 3 oz vodka instead of 2 oz. I am currious what this drink
would taste like if you substituted the cola with orange soda. You may want
to try one.
http://beverage.allrecipes.com/AZ/IrishBlckRssin.asp
Irish Black Russian
1 (1.5 fluid ounce) jigger coffee flavored liqueur
2 (1.5 fluid ounce) jiggers vodka
1 (12 fluid ounce) can or bottle Irish stout beer
1 (12 fluid ounce) can or bottle cola-flavored carbonated beverage
Half-fill a highball glass with ice cubes. Measure in the coffee liqueur and
vodka. Pour cola to within 1/2 inch of the top. finish with enough Irish stout
to form a 'head' on the top. Stir and serve.