Keto Whiskey Sour

🍹 The Classic Whiskey Sour

Ingredients (Classic)

• 2 oz bourbon or rye whiskey

• 3/4 oz fresh lemon juice

• 1/2–3/4 oz simple syrup (sugar + water)

• Optional: 1 egg white (for texture)

• Garnish: maraschino cherry + lemon wheel

The classic method involves shaking everything together (sometimes with a dry shake if egg white is used) and serving over ice or up in a coupe glass.

The downside? That simple syrup. While it’s only about ½ oz per drink, it still adds sugar and carbs that can quickly add up if you’re trying to stay low-carb or keto.

🍋 Keto Whiskey Sour with Keystone Pantry Allulose

We’ve reinvented the classic using allulose—a rare natural sugar that tastes like sugar but doesn’t raise blood sugar levels. This gives you the same balanced sweetness without sacrificing your lifestyle.

Ingredients (Keto Version)

• 2 oz bourbon or rye whiskey

• 3/4 oz fresh lemon juice

• 1/2 oz Keystone Pantry Allulose Simple Syrup*

• Optional: 1 egg white (for that silky foam)

• Garnish: fresh lemon twist or a keto-friendly cherry

*To make allulose simple syrup:
Mix 1 cup water + 1 cup Keystone Pantry Allulose in a saucepan. Heat gently until dissolved, then cool. Store in a bottle for cocktails.

Method

1. Add whiskey, lemon juice, and allulose syrup to a shaker.

2. If using egg white, first dry shake (without ice) to build foam.

3. Add ice and shake until chilled.

4. Strain into a rocks glass with ice or serve up in a coupe.

5. Garnish with a twist of lemon.

⚖️ Classic vs. Keto Whiskey Sour

With Keystone Pantry Allulose, you keep the full flavor experience without compromise.

🧾 Why These Ingredients Matter

• Whiskey (Bourbon or Rye) – The heart of the cocktail. Bourbon brings a rounder, sweeter profile, while rye adds spice and bite. Either works beautifully.

• Lemon Juice – Fresh-squeezed is essential for brightness and balance. Bottled juice just doesn’t compare.

• Allulose Simple Syrup – Sugar-free, keto-friendly, and caramelizes like sugar, so it provides the same mouthfeel as the original.

• Egg White (Optional) – Adds a luxurious silky texture and foamy head, turning the cocktail from casual to elegant.

• Garnish – The citrus oils from a lemon twist lift the drink aromatically, while a keto-friendly cherry gives a nod to tradition.

❓ FAQ: Keto Whiskey Sour

Q: Does using allulose really make a difference?
Yes! Unlike stevia or erythritol, allulose has no aftertaste and behaves just like sugar in cocktails. It balances the tart lemon with the whiskey perfectly.

Q: Can I make this ahead for a party?
Yes. You can pre-mix the whiskey, lemon juice, and allulose syrup in a pitcher (without egg white). Shake individual servings with ice before pouring.

Q: Do I have to use egg white?
Not at all—it’s optional. The drink tastes just as good without it; it just won’t have the foamy top. For a vegan alternative, aquafaba (chickpea water) works too.

Q: Which whiskey works best?
Bourbon is classic for smoothness, but rye whiskey adds a spicier kick. Try both and see which you prefer.

🥂 Final Sip

The whiskey sour has stood the test of time, and now it’s even better. By swapping sugar for Keystone Pantry Allulose, you get a cocktail that’s just as delicious as the classic—without the carbs. It’s proof that tradition and innovation can live in the same glass.