This Basil Whiskey Sour is sugar free and perfect for a keto cocktail! A classic bourbon drink with an herby twist makes for your new favorite summer drink… All for under 2 net carbs each!

Keto Basil Whiskey Sour

This keto cocktail was made for front porch sitting! The sour lemon juice and homemade sugar-free simple syrup mix with earthy basil leaves for the PERFECT keto whiskey drink! You’ll love a Basil Whiskey Sour as a brunch cocktail or nightcap.

If you don’t have time to make your own simple syrup, don’t worry–This drink can easily be made with a quick muddle of basil leaves, liquid monk fruit, and water! It can be made with little to no preparation, so it’s the ideal sugar-free drink for unexpected guests! Add a quick charcuterie board for a super easy little get-together.

Keto Whiskey Sour Ingredients

Here’s a quick overview of what you’ll need. Keep scrolling down to the printable recipe card for exact measurements!

• Bourbon whiskey
• Lemon juice
• Basil leaves
• Liquid monk fruit sweetener
• Water
• Ice 

Basil Sugar Free Simple Syrup

To start, make a sugar-free simple syrup infused with basil leaves! In a small pot, combine water, basil leaves, and liquid monk fruit sweetener. Bring to a boil, then reduce heat and allow to simmer for 20 minutes. Finally, allow to cool for 20 minutes, strain, and pour into an airtight container.

This syrup will keep in the fridge for several weeks and is great in many cocktails! Use it in a gin fizz or a lemon drop for a tasty drink straight for the garden. If using a different brand of liquid monk fruit sweetener, you may want to start with half the amount and add to taste. You can add more sweetener before or after simmering, so it’s easy to adjust for your preferences!

Time Saver Tip:

Don’t have time to make the syrup? You can still make this drink! In your cocktail shaker, muddle 5-6 basil leaves with 1.5 tablespoons water and 1/4-1/2 teaspoon liquid monk fruit sweetener. Add ice, bourbon, and lemon juice, then shake and serve. I don’t feel like the basil flavor is quite as strong, but this method will work in a pinch.

How to make a sugar free whiskey sour

In a cocktail shaker full of ice, pour over your whiskey, homemade basil simple syrup, and lemon juice. Shake at least 30 seconds, then pour into a double old fashioned glass full of ice (optional). Garnish with a lemon slice and basil leaves.

Note: Some people don’t serve whiskey sours with ice because it waters down the drink. I prefer it with ice, but you can easily serve this in a smaller glass without ice if that’s your style.

What to serve with a Keto Whiskey Sour

This Keto Whiskey Sour has a great balance of sweet, tart, and earthy elements. This balanced drink would go great with dishes like One Pan Tuscan Chicken, Italian Chopped Salad, or Instant Pot Carnitas. Seafood dishes like Bacon Wrapped Scallops or Shrimp Alfredo would also pair well with this cocktail! For appetizers, consider serving with Air Fryer Steak Tips and Air Fryer Cauliflower.

Keto Cocktails

• Keto Mint Julep – 0 net carbs (yes, really!)
• Blackberry Bourbon Smash – 2.5 net carbs
• Keto Mojito – 1.3 net carbs
• Keto Margarita – 1.4 net carbs

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Yield: 1 10-ounce cocktail

Basil Whiskey Sour (Sugar Free + Keto)

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This Basil Whiskey Sour is sugar free and perfect for a keto cocktail! A classic bourbon drink with an herby twist makes for your new favorite summer drink... All for under 2 net carbs each!

Ingredients

Basil Simple Syrup

• 1/2 cup basil
• 1 cup water
• 1 tablespoon liquid monk fruit sweetener

Basil Whiskey Sour

• 2 ounces bourbon
• 3/4 ounce lemon juice
• 3/4 ounce sugar free basil simple syrup
• Ice

Instructions

1. In a small pot, add your water, basil, and monk fruit. Bring to a boil, then simmer on low for 15-20 minutes. Remove from heat and allow to cool for 20 minutes. Pour through a fine mesh strainer and store in the fridge up to 2 weeks.
2. In a cocktail shaker, add your bourbon, lemon juice, simple syrup, and ice. Shake at least 30 seconds or until cocktail shaker is extremely cold.
3. Pour over ice in a double old fashioned glass. Garnish with a lemon slice and sprig of basil.

Notes

Quick, no-prep simple syrup alternative: In your cocktail shaker, muddle 5-6 basil leaves with 1.5 tablespoons water and 1/4-1/2 teaspoon liquid monk fruit sweetener. Add ice, bourbon, and lemon juice, then shake and serve.

Nutrition Information:

Yield:

1

Serving Size:

1 10-ounce drink
Amount Per Serving: Calories: 144Total Fat: 0.1gCholesterol: 0mgSodium: 6.8mgCarbohydrates: 1.5gNet Carbohydrates: 1.3gFiber: 0.2gSugar: 0.4gProtein: 0.1g