Grapefruit Whiskey Sour

Susan Palmer | Girl in the Little Red Kitchen

This grapefruit whiskey sour harnesses the best flavors of citrus season in an easy to drink cocktail for the ages. Don’t forget the grapefruit wedges for garnish!

Grapefruit Whiskey Sour Photo

While packing for my recent move, I came to the realization that I have a lot of unloved bottles of booze on my bar cart. They get purchased for a specific recipe or a cocktail, get used once or twice and put away to collect dust for months (or I’m ashamed to admit years on end).

The worst part is when I forget I have something, and then go out and buy another bottle. I won’t even admit to the amount of multiple bottles of rum and gin I have.

Grapefruit Whiskey Sour Picture

In general, moving gives a great excuse to purge unwanted items, but this is alcohol we are talking about and is it ever unwanted? In most cases it won’t go bad, I’m not prone to keep a bottle I’ve had for years and years but if it’s been there for a year or two it’s good. Is it at its peak taste? Maybe not but for mixing up a cocktail it will do the trick.

Which is why now that I’m moved and settled at home that I’m vowing to use what I have before I go buy more. Everything is organized and viewable on a pretty new bar cart, unlike at my old home and I have no excuse. It’s also a great reason to mix and match and add a splash of something to a drink you may not normally add a splash of something to.

Grapefruit Whiskey Sour Image

I’ve had this Grapefruit Sour on my list of cocktails to make for sometime now. At first glance it looks like your basic whiskey sour with the grapefruit in place of lemons or limes for the sour mix.

It makes for a wonderful winter cocktail, taking full use of all those gorgeous grapefruits studding your grocery store aisles right now. What makes this cocktail just a little bit more special is the addition of St. Germain or Elderflower liqueur.

Grapefruit Whiskey Sour Pic

The bright and fragrant floral flavor is a lovely compliment to the sweet but tart grapefruit and smoky bourbon.

Grapefruit Whiskey Sour Recipe

  2 Servings


  • 2 ounces Simple Syrup, (1:1 ratio water and sugar)
  • 2 ounces Fresh Grapefruit Juice
  • 4 ounces Bourbon, or Rye
  • 1 ounce St. Germain, or Elderflower liqueur
  • Grapefruit Wedges, for garnish


  1. Add all the ingredients to a cocktail shaker filled with ice.
  2. Shake and strain into 2 rocks glass filled with ice.
  3. Garnish with a grapefruit wedge. 


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Susan Palmer

About Susan

Susan bakes up delicious treats as the Girl in the Little Red Kitchen at home in Brooklyn. She's joined Food Fanatic as a Cocktails and Boozy Desserts Fanatic, and we could not be more excited!