Wadliegh - Rum, Bourbon, Lime & Dr. Pepper Highball

The Wadliegh combines rum and bourbon in equal measures, then stretches them with Dr. Pepper and a small pour of lime. There is no broadly recognized canonical specification for this drink, but the current proportions are coherent: the soda provides the sweetness and length while lime keeps the finish from becoming syrupy.

What You'll Need

Ingredients

• Rum - adds sugarcane character and rounded sweetness.
• Bourbon - brings oak, vanilla, and caramel depth.
• Lime Juice - provides the acidity that checks the sweet soda.
• Dr. Pepper - supplies carbonation, sweetness, and layered spice.

Rye can replace bourbon for a drier, spicier version. Spiced rum intensifies the soda's spice profile.

Equipment

• Collins Glass
• Jigger
• Bar spoon

Why the Split Base Works

Rum and bourbon overlap in caramel and vanilla notes but still bring different structure. Lime is small but essential, giving enough acidity to keep the long soda pour lively.

Substitutions & Variations

• Use rye instead of bourbon for more spice.
• Use aged rum for additional oak.
• Try cherry cola for a fruitier variation.
• Add a dash of aromatic bitters for more spice.

Helpful Tips

• Chill the soda before building.
• Add Dr. Pepper last to preserve carbonation.
• Stir only once or twice after topping.
• Use fresh lime juice.
• Fill the glass generously with ice.