Soda Siphon Cocktails: How to Make the Classic Whiskey Highball

The Whiskey Highball is a timeless cocktail that has remained popular for decades due to its simplicity, elegance, and refreshing nature. This two-ingredient drink combines the rich, smoky notes of whiskey with the bright effervescence of soda water, resulting in a crisp and invigorating beverage perfect for any occasion. Whether you’re relaxing at home or entertaining guests, the Whiskey Highball offers a perfect balance of flavors with minimal effort.

While many enjoy this cocktail using store-bought soda water, using a soda siphon to make your own carbonated water adds an extra level of control and freshness. In this guide, we’ll take you through the steps to make the perfect Whiskey Highball using a soda siphon, ensuring that you achieve the ideal level of carbonation and flavor every time.

What is a Whiskey Highball?

A Whiskey Highball is a simple cocktail made with whiskey and carbonated water, traditionally served in a tall glass filled with ice. The beauty of this drink lies in its simplicity: the soda water lightens the boldness of the whiskey, creating a smooth, easy-to-drink cocktail that can be enjoyed any time of day.

While it may seem basic, the key to a great Whiskey Highball is using high-quality ingredients and achieving the right level of carbonation. A soda siphon allows you to control the fizz, ensuring a perfectly bubbly drink every time.

Ingredients for a Classic Whiskey Highball

This recipe makes one Whiskey Highball, but it can easily be scaled up for multiple servings.

  • 2 ounces of whiskey (Japanese, Scotch, or your preferred whiskey)
  • Soda water (made using a soda siphon)
  • Ice cubes
  • Lemon twist or wedge (optional, for garnish)

Why Use a Soda Siphon for a Whiskey Highball?

A soda siphon is a kitchen tool that allows you to carbonate liquids by injecting CO₂ into water. The result is fresh, fizzy soda water that you can use in a variety of cocktails, including the Whiskey Highball. Here’s why a soda siphon enhances this cocktail:

  • Freshness: Store-bought soda water can lose its fizz quickly after opening. With a soda siphon, you get freshly carbonated water every time, making the drink more refreshing and bubbly.
  • Customization: Adjust the level of carbonation to your liking, whether you prefer a subtle fizz or a sharp, crisp bubble.
  • Sustainability: Making your own soda water at home reduces the need for plastic or glass bottles, making it a more environmentally friendly option.

Step-by-Step Guide to Making a Whiskey Highball with a Soda Siphon

Step 1: Prepare the Soda Siphon

  1. Fill the Soda Siphon with Water: Use cold, filtered water, as cold water holds carbonation better. For best results, refrigerate the water for at least 30 minutes.
  2. Charge the Siphon with CO₂: Attach the CO₂ charger to the soda siphon and release the gas. Shake the siphon gently for about 10-15 seconds to distribute the carbonation evenly.
  3. Chill the Siphon: After charging the water, place the soda siphon in the fridge to keep the soda water cold until you’re ready to use it.

Step 2: Select Your Whiskey

The Whiskey Highball is versatile and can be made with various types of whiskey. Here are some suggestions:

  • Japanese Whiskey: Known for its delicate, balanced flavors, Japanese whiskey pairs well with soda water for a light, refreshing drink.
  • Scotch Whiskey: Adds smoky and peaty notes for a more complex cocktail.
  • Bourbon or Rye Whiskey: Brings warmth and a hint of sweetness, creating a fuller-bodied Highball.

Once you’ve selected your whiskey, pour 2 ounces into a tall Highball glass.

Step 3: Add Ice

Fill your glass with ice cubes to keep the drink cold and help maintain the carbonation. For best results, use large ice cubes to prevent the drink from diluting too quickly.

Step 4: Top with Soda Water

Using your soda siphon, gently release the freshly carbonated soda water into the glass over the whiskey. Pour slowly to preserve the carbonation. The ideal ratio is about 2 parts soda water to 1 part whiskey, but adjust to your taste.

Step 5: Stir Gently

Use a long bar spoon to stir the whiskey and soda water gently. Avoid vigorous stirring, as this can cause the soda water to lose bubbles quickly.

Step 6: Garnish and Serve

Add a lemon twist or wedge for a bright, citrusy aroma. Serve immediately while the drink is cold and bubbly.

Classic Whiskey Highball

Tips for the Perfect Whiskey Highball

  • Use Chilled Ingredients: Keep the whiskey and soda water as cold as possible to preserve carbonation.
  • Choose High-Quality Whiskey: Opt for whiskey you enjoy drinking neat, as the soda water enhances its flavor.
  • Don’t Overdo the Ice: Too much ice can dilute the drink quickly. Use large ice cubes or whiskey stones to maintain cold temperature without excessive dilution.
  • Experiment with Flavors: Feel free to add a splash of bitters, a twist of grapefruit peel, or a dash of ginger syrup for added complexity.

Variations on the Classic Whiskey Highball

  • Ginger Highball: Swap the soda water for ginger ale or ginger beer for a spicier drink.
  • Citrus Highball: Add freshly squeezed lemon or lime juice for a tangy twist.
  • Herb-Infused Highball: Infuse your soda water with fresh herbs like rosemary, thyme, or mint before charging with CO₂ for added complexity.

Conclusion

The Whiskey Highball is a simple yet sophisticated cocktail that showcases the beauty of high-quality whiskey and crisp, refreshing soda water. Using a soda siphon to make fresh soda water elevates this classic drink, ensuring perfect carbonation and freshness every time. Enjoy experimenting with this drink and discovering your own perfect balance of flavors!

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