Only had Bacardi Carta Blanca in the house, but this sounded so good that I wanted to give it a whirl anyway. And it’s delicious! With the Carta Blanca substitution, the Kahlúa becomes very front and center, but the other flavors aren’t totally lost. I’ll make the modified version again, but with 1/4 oz. Kahlúa instead of 1/2 oz.