Dr. Funk is a rum-based tiki cocktail built around dark rum, absinthe, lime juice, grenadine, and bitters, topped with soda water. The whole thing takes five minutes and one shaker. If you want something more interesting than a gin and tonic but don’t want to spend half an hour on it, this is a good call.
Before you start
Two things matter here. First, shake hard and long enough — 10 to 15 seconds until the shaker is genuinely cold on the outside. That chill isn’t just about temperature; it also dilutes the drink slightly, which softens the absinthe so it plays with the rum instead of drowning it out. Second, squeeze your lime fresh. Bottled lime juice is noticeably flatter, and since lime is one of only three flavor-forward ingredients in this drink, it shows.
Substitutions that actually work
- Absinthe: This is the one ingredient worth tracking down rather than skipping — it’s what makes Dr. Funk taste like itself. That said, Pernod or another anise-flavored liqueur works if absinthe isn’t available; just know the herbal edge will be softer.
- Dark rum: Any aged, molasses-forward dark rum works. Spiced rum will shift the flavor profile toward vanilla and clove, which isn’t wrong, just different.
- Grenadine: Use a brand made with real pomegranate juice (Stirrings or homemade), not the neon-red corn syrup version. The flavor difference is real and the color is better too.
- Angostura bitters: No close substitute — but if you’re out, the drink still works without them. They add depth, not structure.
Mistakes to avoid
- Adding soda water before straining: Always shake first, strain into the glass, then top with soda. Shaking carbonated liquid kills the bubbles and makes a mess.
- Using too little ice in the glass: A half-filled highball glass means the drink warms up fast. Pack the glass with ice before you strain.
- Pouring absinthe heavy: Fifteen milliliters is the right amount — measure it. A splash-and-guess approach almost always overshoots, and too much absinthe makes the whole drink taste like licorice candy.
- Stirring too aggressively after adding soda: A gentle stir is all you need. Hard stirring flattens the soda water quickly and you lose the light texture that makes this drink work.
- Skipping the garnish — skip it, it’s not worth the extra dish. A lime wheel looks nice but adds nothing to the flavor, and a sprig of mint wilts fast in a cold drink.
Dr. Funk Cocktail: Classic Tiki Rum Drink Recipe
Equipment
- Cocktail shaker
- Hawthorne strainer
- highball glass
- Jigger or measuring cup
- Citrus Juicer
Ingredients
- 2 oz dark rum 60ml; preferably a rich, aged rum for depth of flavour
- ½ oz absinthe 15ml; a quality absinthe for an aromatic touch
- ½ oz lime juice 15ml; freshly squeezed
- ½ oz grenadine 15ml; use a high-quality grenadine made with real pomegranate
- 2 dashes Angostura bitters
- 6.8 oz soda water 200ml; chilled, or as needed to top
- 2 ½ cups ice cubes for shaker and serving
- 1 piece lime wheel or sprig of fresh mint for garnish
Instructions
- Fill a cocktail shaker halfway with ice cubes.2 1/2 cups ice cubes
- Pour the dark rum, absinthe, lime juice, grenadine, and Angostura bitters into the shaker.2 oz dark rum, 1/2 oz absinthe, 1/2 oz lime juice, 1/2 oz grenadine, 2 dashes Angostura bitters
- Shake well until combined, about 10-15 seconds, until the outside of the shaker feels cold to the touch.
- Strain the mixture into a highball glass filled with ice.2 1/2 cups ice cubes
- Top with chilled soda water, leaving about 1 cm (½ inch) of space at the rim. Stir gently two or three times to combine without losing carbonation.6.8 oz soda water
- Garnish with a lime wheel or a sprig of fresh mint.1 piece lime wheel or sprig of fresh mint
Notes
Nutrition
Common questions
Can I make Dr. Funk without absinthe?
You can, but it won’t taste like Dr. Funk — the anise note is central to what makes this cocktail distinct. Pernod is the most practical substitute; use the same 15 ml measure.
What kind of glass should I use?
A highball glass is the right call here. It holds enough ice and soda water to keep the proportions balanced, and the tall shape keeps the drink cold longer.
Can I batch this for a group?
Yes — multiply all ingredients except the soda water, shake in batches, and strain into a pitcher over ice. Add the soda water per glass right before serving so it stays fizzy.
Is there a non-alcoholic version?
Not a direct one — absinthe and dark rum are both load-bearing flavors here. A mocktail with a non-alcoholic rum alternative, a drop of anise extract, lime, grenadine, and soda water gets you in the neighborhood, but it’s a different drink.
Does the type of dark rum matter much?
It matters more than you’d expect given how many other ingredients are in the glass. A thin or light rum gets lost; you want something aged with a noticeable molasses flavor. Gosling’s Black Seal or Appleton Estate 12 are easy to find and work well.
More recipes to try
- The Perfect Aperol Spritz
- Espresso Martini
- Creamy Cinnamon Horchata
- Warm Comfort in a Glass: The Classic Hot Toddy
