Baso Cocktail: Spiced Rum, Goldschlager & Grapefruit Highball

The Baso is a refreshing citrus highball that blends warm cinnamon spice with bright grapefruit and lime. Spiced rum and Goldschlager create a bold aromatic base, while club soda lifts the drink into a crisp, easy-sipping cocktail. It’s the kind of drink that works just as well at backyard gatherings as it does as a casual evening refresher.

Background

The Baso cocktail doesn’t have a clearly documented origin, but it reflects a style that became popular in modern bar menus during the late 2000s: simple spirit-forward builds with fresh citrus and sparkling mixers. Drinks like this emphasize bold flavor pairings and easy preparation, making them ideal for home bartenders.

What You’ll Need

Ingredients

• Spiced Rum – the warming base spirit that delivers notes of vanilla, cinnamon, and baking spice.
• Goldschlager® – cinnamon schnapps that intensifies the drink’s spice profile.
• Lime Juice – bright acidity that keeps the cocktail balanced and lively.
• Grapefruit Juice – tart citrus that adds depth and a slightly bitter edge.
• Club Soda – adds carbonation and turns the drink into a refreshing highball.

Substitution ideas

• No Goldschlager? Use cinnamon schnapps or add a dash of cinnamon syrup to vodka.
• Swap spiced rum for dark rum for a deeper molasses character.
• Prefer sweeter citrus? Replace grapefruit juice with blood orange juice.

Equipment

• Cocktail shaker
• Jigger
• Strainer
• Highball glass

Why This Cocktail Stands Out

Citrus Meets Cinnamon

The Baso’s signature feature is the contrast between bright grapefruit acidity and warm cinnamon spice. That pairing gives the drink a layered flavor profile that feels refreshing but still bold.

Built for Easy Entertaining

This cocktail uses only a handful of ingredients and takes less than a minute to shake and serve. It’s an excellent choice when you want something more interesting than a simple rum and soda.

Light but Flavorful

Thanks to the club soda topper, the drink stays crisp and refreshing while still delivering noticeable spice and citrus complexity.

Substitutions & Variations

Turn it tropical
Replace grapefruit juice with pineapple juice for a sweeter island-style version.

Make it stronger
Increase spiced rum to 1.5 oz and reduce grapefruit slightly for a more spirit-forward drink.

Add herbs
A few muddled mint leaves introduce a refreshing herbal note that works surprisingly well with the citrus and spice.

Helpful Tips

Use fresh citrus whenever possible
Fresh lime and grapefruit juice dramatically improve brightness and balance.

Chill your glass
A quick 5–10 minutes in the freezer keeps the drink crisp longer.

Garnish strategically
A grapefruit peel or cinnamon stick garnish reinforces the cocktail’s core flavor themes.

Batching for parties
Pre-mix the rum, Goldschlager, and juices in a pitcher. Shake individual servings with ice and top with soda when ready to serve.