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.