If your Scotch and soda keeps turning into a tall glass of fizzy water, start with less soda. You can always add another splash after the first sip. You can’t pull it back out once the whisky disappears.

That small choice is what makes this two-ingredient highball feel intentional. Cold glass, plenty of clear ice, chilled soda, and one gentle lift with a spoon keep the drink lively without beating out all the bubbles. The first version below is whisky-forward. The lighter versions let you decide how long and easy you want the drink to be.

At a Glance

DetailInfo
Prep time5 minutes
Yield1 highball
GlassTall highball or Collins glass
Base spiritBlended Scotch whisky
Starting ratio2 ounces Scotch to 3 ounces soda
FlavorCold, crisp, lightly smoky, whisky-forward
DifficultyVery easy
Scotch and soda highball in a tall clear glass with large ice and a lemon twist on a dark walnut bar
Start with less soda, taste, and lengthen the drink only as far as you want.

The Ratio Is a Dial, Not a Rule

A Scotch and soda doesn’t need one universal ratio. It needs a useful starting point.

Begin with 2 ounces of Scotch and 3 ounces of club soda. That gives the whisky enough room to stay recognizable while the soda opens the aroma and lightens the finish. If you want a longer drink, add soda one ounce at a time.

Here is the easiest way to think about it:

  • 2 ounces Scotch + 3 ounces soda: whisky-forward and best for a flavorful blended Scotch
  • 2 ounces Scotch + 4 ounces soda: balanced, crisp, and easy to drink with food
  • 2 ounces Scotch + 6 ounces soda: light and long for a hot afternoon

Taste after the first pour. The right stopping point depends on the whisky, the ice, and how slowly you plan to drink it.

What You Need

  • 2 ounces blended Scotch whisky
  • 3 to 6 ounces very cold club soda
  • One long lemon peel
  • Enough clear ice to fill a tall glass

A blended Scotch is the easiest place to start. It usually has enough malt character to remain present under soda without making the drink feel heavy. Save a smoky single malt for the nights when you specifically want smoke to lead.

Plain club soda is the cleanest choice. Flavored sparkling water can work, but then you’re making a different cocktail. Tonic water adds sweetness and bitterness, which also changes the balance.

Blended Scotch, chilled club soda, lemon peel, clear ice, and a tall highball glass arranged on a dark walnut bar
Cold ingredients and a full glass of ice protect the bubbles and keep the first sip tasting like the last.

How to Make a Scotch and Soda Highball

  1. Chill the glass and club soda. Ten minutes in the freezer is enough for the glass if you forgot to plan ahead.

  2. Fill the glass all the way with clear ice. A half-filled glass melts faster and dilutes the drink sooner.

  3. Pour 2 ounces of Scotch over the ice.

  4. Add 3 ounces of club soda slowly. Aim the stream down the inside wall of the glass so the pour doesn’t knock out more carbonation than necessary.

  5. Slide a long bar spoon to the bottom and lift once. Don’t stir in circles.

  6. Taste. Add another ounce or two of soda if you want a lighter drink.

  7. Express a lemon peel over the surface, run it once around the rim, and drop it in beside the ice.

Why Temperature Matters So Much

Warm soda loses its edge quickly. Warm whisky also melts the ice faster, which changes the ratio while you drink. Starting cold keeps the highball crisp and gives you more time before dilution takes over.

Keep the soda in the refrigerator and chill the glass when you can. Large clear cubes are helpful because they melt slowly, but ordinary freezer ice still works if the glass is filled generously. More cold ice means less rapid melting, not more dilution.

This is the same practical logic behind a good Maple Bourbon Old Fashioned with black walnut bitters: control temperature and dilution, then let a few ingredients do their jobs.

Choosing the Scotch

For a first highball, reach for a balanced blended Scotch with gentle fruit, honey, grain, and a little smoke. The soda stretches those aromas without demanding a long ingredient list.

If you use a heavily peated whisky, expect the smoke to feel sharper once the drink is carbonated. That can be wonderful, but it is not subtle. Start with the whisky-forward 2-to-3 build and add soda carefully.

A soft, honeyed Scotch can handle the balanced 2-to-4 build. A lighter blend may disappear at 2-to-6, so taste before turning the drink into a long pour.

Three Small Variations

Lemon Highball

Use a wide lemon peel and express it firmly over the finished drink. Don’t add lemon juice. The peel gives aroma without turning the highball sour.

Ginger Scotch Highball

Replace one ounce of club soda with dry ginger ale. This is sweeter than the original, so keep the pour restrained and skip extra syrup.

Smoky Grapefruit Highball

Use a gently smoky Scotch and express a grapefruit peel instead of lemon. The bitter citrus aroma makes the smoke feel brighter without adding juice.

What to Serve With It

A Scotch and soda is useful at the table because it is lighter than a neat pour and less sweet than many cocktails. Try it with:

  • sharp cheddar and toasted nuts
  • smoked salmon on rye crackers
  • grilled sausages or burgers
  • mushroom toast
  • salted potato chips
  • dark chocolate after dinner

If you are setting out drinks for friends, the highball also fits a small bar cart with the essentials you actually use. One whisky, cold soda, lemon peel, and ice are enough.

Common Questions

Is Scotch and soda the same as a highball?

Scotch and soda is a whisky highball: spirit, carbonated mixer, ice, and a tall glass. “Highball” describes the drink family, while Scotch and soda names this specific version.

Should I use sparkling water or club soda?

Either can work. Club soda usually has a slightly more mineral taste and a firm bubble. Choose an unflavored bottle and chill it thoroughly.

Do I need to stir it?

Only once. A single lift from the bottom combines the whisky and soda without flattening the drink.

Can I make several ahead?

Don’t fully build them ahead because the bubbles fade. Chill the glasses, portion the Scotch, prepare the peels, and open the soda only when you’re ready to pour.

Final Sip

The best Scotch and soda is not the one with the most soda. It is the one that lands where you want it. Start at 2 ounces of Scotch to 3 ounces of soda, keep everything cold, and lengthen the drink one splash at a time.