YES! You can make your own Kahlua-esk adult beverage at home. You will need Vodka (750ml), 3 cups of water, 1 cup of coffee (I made strong espresso and diluted it with water to make the full 1 cup), a teaspoon of vanilla or one vanilla bean (or both), 1 & 1/2 cup of both brown and white sugar, and lastly containers to hold your liquor.
and so to start you will need to place all of the water in the pot and let it start to boil, then add the sugar, followed by the coffee. Let this boil for 1-3 hours. I just stopped at 1.5 hours. It makes a syrup so the longer you boil the more of a syrupy texture you will have.
After boiling remove from heat. Add vanilla. Let cool for around 30 min and add the vodka. Then let cool completely so you don’t burn yourself while transferring the liquor into your containers. If you use vanilla beans, use the insides for flavoring and place the discarded bean in the bottles to infuse more vanilla over time.
Finally, enjoy! Cheers!