Homemade Sugar-Free Kahlua: Easy Mexican Liqueur Recipe

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Coffee and cocktail lovers, this one is for you! If you’re in the mood to shake things up a bit in your home bar, you’re in for a real treat. Today, we’re diving into the world of homemade liqueurs with a fantastic Homemade Sugar-Free Kahlua recipe. This isn’t just any liqueur; it’s a low-carb, keto-friendly version of your beloved Mexican coffee liqueur, promising all the rich, deep flavors without the sugar rush.

Picture this: a dark, aromatic brew that wraps around your senses, the kind of indulgence that usually comes with a side of guilt. Not this time! Our version is sweetened with low-carb alternatives, making it a perfect fit for your healthy lifestyle. And the best part? It’s surprisingly easy to make. Perfect for festive occasions like Christmas, Thanksgiving, and New Year’s Eve, this homemade Kahlua will be the highlight of your holiday celebrations. Whether you’re hosting a fancy dinner party or just craving a cozy night in, this homemade Kahlua is about to become your new favorite. Let’s get brewing!

Why You’ll Love This Recipe

  • Keto-Friendly: Fits perfectly into a low-carb lifestyle.
  • Homemade Liqueur: Enjoy the rich, authentic taste of homemade liqueur.
  • Versatile: Great for cocktails, like White Russian, or as a standalone drink.
  • Easy to Make: Simple preparation process.
  • Long Shelf Life: Stores well, allowing you to enjoy it over time.

Ingredients & Substitutions

Heads up: For exact measurements, see the recipe card below.

Whipping up this delicious Homemade Sugar-Free Kahlua recipe is a breeze with just a handful of ingredients:

  • Strong Brewed Coffee: The foundation of your liqueur’s rich flavor. Espresso or Swiss water process decaf coffee is ideal.
  • Filtered Water: Helps to balance the concentration of flavors.
  • Vodka or Rum: Choose dark or light rum for a twist, or stick with classic vodka.
  • Low-Carb Sweetener: Allulose works well to sweeten without the carbs and any sweetener crystals.
  • Sugar-Free Vanilla Extract: Adds a hint of smooth vanilla essence to your liqueur.
Can I use a different type of alcohol besides vodka or rum?

Yes! While rum or vodka are traditional choices, feel free to experiment with other spirits like brandy or whiskey for a unique twist.

Why is Allulose recommended if I’m refrigerating my sugar-free Kahlua recipe?

Allulose is an excellent sweetener for refrigerated use because, unlike other sweeteners like Erythritol and Erythritol-base sweeteners like Swerve, it doesn’t crystallize at cold temperatures. It doesn’t mean you vanity use Erythritol or Swerve, but it won’t be the same. With Allulose, your Kahlua will maintain a smooth, syrup-like consistency even when chilled. If you don’t have Allulose, try Bocha Sweet for similar effects.

How To Make Sugar-Free Kahlua at Home

Prepare the Coffee. Begin with brewing your coffee. The quality of coffee is key here – fresh brewed espresso or Swiss water process decaf coffee is preferred for its robust flavor.

Combine Ingredients. In a saucepan, combine the brewed coffee, water, and your choice of low-carb sweetener. Heat the mixture over medium heat, stirring continuously until the sweetener is fully dissolved. This step ensures a smooth texture without any film forming on top of your sugar-free Kahlua.

Making Kahlua at home with coffee, vodka and low-carb sweetener.
Dissolving low-carb sweetener in coffee in a pot.

Cool the Mixture. Remove the pan from the heat and let the mixture cool down to tepid. This is important to maintain the integrity of the flavors before adding the alcohol.

Add the Alcohol. Once the coffee mixture is cool, stir in the vodka (or dark/light rum, if you’re using it) along with the sugar-free vanilla extract. This is where your sugar-free Kahlua starts to take its final form.

Adding vodka to sweet coffee mixture.
Making Kahlua at home with coffee, vodka and low-carb sweetener.

Bottle and Store. Pour the mixture into bottles for storage. Though it’s tempting to try right away, let it develop its flavors fully by storing in a cool, dark place for 2-4 weeks. If a film develops on top, just give the bottle a gentle shake before serving.

Homemade Sugar-Free Kahlua: Favorite Mexican Liqueur recipe.

Tips for Best Sugar-Free Kahlua Recipe

  • Quality of Coffee Matters: The better the coffee, the more exquisite the flavor of your Kahlua. Opt for fresh-brewed espresso or a good quality Swiss water process decaf coffee for a rich and robust taste.
  • Sweetener Dissolving: Ensure all the sweetener is completely dissolved before removing the mixture from heat. This prevents any unwanted texture or film in your final product.
  • Cooling is Crucial: Allow the coffee mixture to cool to tepid before adding alcohol. This step is vital to prevent the alcohol from evaporating and to preserve the depth of flavors.
  • Patience Pays Off: While it’s tempting to taste your Kahlua right away, allowing it to sit for 2-4 weeks truly enhances its flavor. The waiting period allows the ingredients to meld together perfectly.
  • Allulose is Best: If using Allulose as your sweetener and refrigerating it, don’t worry about crystallization, as Allulose stays smooth in colder temperatures!

Storage Instructions

How long will the homemade Kahlua last?

Your homemade sugar-free Kahlua can last for up to 2 years when stored properly. The key is to keep it in a cool, dark place, like a pantry or a cupboard, away from direct sunlight and heat sources.

Can I refrigerate this sugar-free Kahlua?

Yes, refrigerating your homemade Kahlua is absolutely fine, especially if you’ve used allulose as your sweetener. Allulose won’t crystallize in cold temperatures, ensuring your Kahlua maintains a smooth consistency.

Is it possible to freeze the Kahlua?

While freezing is not recommended as it may alter the texture and taste, your Kahlua is stable enough at room temperature or when refrigerated. If you need to store it for an extended period, just ensure it’s kept in a cool, dark place.

How to Serve Sugar-Free Kahlua

Your Homemade Sugar-Free Kahlua is ready to enjoy over ice or as a base in various cocktails. For a fresh batch, remember it tastes even better after it’s had time to mature! Here’s a few more ways you can enjoy your sugar-free Kahlua recipe:

  • Classic White Russian: Combine your homemade Kahlua with vodka and a splash of heavy cream or coconut milk/cream for a dairy-free alternative.
  • Kahlua Coffee: Add a shot to your coffee for a delicious, flavor-enhanced drink.
  • Kahlua Dessert Topping: Drizzle over low-carb ice cream or use as a topping for keto-friendly desserts for an extra kick of flavor.
  • Kahlua Hot Chocolate: Stir into a cup of hot chocolate for a cozy, warming drink, perfect for chilly evenings.
  • Kahlua Baking Ingredient: Incorporate into your baking recipes for flavored cakes, cupcakes, pies, or brownies, adding a unique depth to your low-carb desserts. Try in our Low-Carb Pecan Pie instead of classic rum!

How To Make Sugar-Free White Russian

This low-carb Kahlua recipe is the perfect base for tasty cocktails such as White Russian. You’ll need:

  • 2 shots (60 ml/2 fl oz) of vodka
  • 1 shot our homemade Homemade Sugar-Free Kahlua (30 ml/1 fl oz)
  • ice to taste
  • 2 tbsp heavy whipping cream (30 ml)

Simply fill your glass with ice, and then add the vodka, homemade Homemade Sugar-Free Kahlua, and mix. Pour a splash of cream over the top and swirl to combine. For a dairy-free option you can use coconut cream or coconut milk.

Homemade Sugar-Free Kahlua: Favorite Mexican Liqueur recipe.

Tools for Sugar-Free Kahlua Recipe

  • Funnel: Helpful for transferring the Kahlua into bottles without any spills.
  • Glass Bottles or Mason Jars: To store your Kahlua. Choose bottles or jars that can be sealed tightly.
  • Coffee Maker, Espresso Machine or French Press: To brew strong coffee or espresso, the base of your Kahlua.
Homemade Sugar-Free Kahlua: Favorite Mexican Liqueur recipe.

Homemade Sugar-Free Kahlua

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This Homemade Sugar-Free Kahlua recipe is a game changer for cocktail enthusiasts and keto followers alike. A perfect blend for holiday drinks or a cozy evening treat, it's easy to make and deliciously versatile for Christmas, New Year's Eve, or any festive occasion. Enjoy the rich, authentic flavor of your favorite Mexican liqueur without the carbs!
Servings2 bottles
Prep Time10 minutes
Cook Time5 minutes
Total Time15 minutes
Print Pin Rate


  • 2 cups strong brewed coffee (ideally espresso or Swiss water process decaf coffee)
  • 1 cup filtered water
  • 2 cups vodka (or dark or light rum)
  • 2 cups granulated low-carb sweetener (Allulose or Swerve)
  • 2 tbsp vanilla extract (sugar-free)


  • Brew strong coffee, preferably espresso or Swiss water process decaf, for a rich flavor base.
  • In a saucepan, mix the brewed coffee with filtered water and granulated low-carb sweetener. Heat over medium until the sweetener dissolves completely.
  • Remove from heat and let the mixture cool to tepid.
  • Stir in vodka or your choice of dark or light rum, and sugar-free vanilla extract.
  • Carefully pour the mixture into bottles using a funnel. Let it cool completely before capping.
  • Your Kahlua can be served straight away, but is best kept in a cool, dark place for 2-4 weeks for the flavors to fully develop.


Calories: 27kcalNet Carbs: 0.5gCarbohydrates: 0.5gSodium: 1mgPotassium: 6mgSugar: 0.5g


  • Serving Size: 1 shot (30 ml) or depending on the use. Nutrition facts are per 1 shot. Recipe makes about 2 bottles (1.3L).
  • Usage Ideas: Versatile in use, enjoy it in a classic White Russian, as a flavorful addition to your coffee, or as an ingredient in keto-friendly desserts and baked goods.
  • Sweetener Choice: Allulose is the best choice if you plan to refrigerate your Kahlua, as it doesn’t crystallize. Erythritol or Swerve are great alternatives for room temperature storage.
  • Coffee Quality: Use high-quality coffee for the best flavor. Fresh-brewed espresso or Swiss water process decaf coffee brings out a richer taste in your Kahlua.
  • Alcohol Options: Vodka is a classic choice, but you can experiment with dark or light rum for different flavor profiles. The key is to use a spirit that complements the coffee.
  • Cooling Time: Let the coffee mixture cool to tepid before adding alcohol. This prevents alcohol from evaporating and maintains the flavor integrity.
  • Patience for Flavor: Allow your Kahlua to sit for 2-4 weeks in a cool, dark place. This aging process enhances the depth and richness of the flavors.
  • Storage: Store your Kahlua in a cool, dark place for up to 2 years. If refrigerated, especially with allulose as the sweetener, it maintains a smooth consistency without crystallization.

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