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This grapefruit Irish Mule is a refreshing cocktail that contains Irish whiskey, grapefruit juice, and ginger beer. It’s very easy to make and only contains a handful of ingredients! You will love this twist on the classic.

close-up of grapefruit Irish mule cocktail with grapefruit slices and ice in a copper mug

The grapefruit juice goes well with the ginger and the smoothness of the whiskey.

This drink would be perfect for St. Patrick’s Day, obviously, but I feel like the grapefruit just adds an extra summery element to it, I don’t know. Yes, grapefruit is technically a winter citrus, but citrus in general just feels like summer to me. Perfect for sipping on a hot day!

two mugs of grapefruit mule cocktail beside a bottle of Irish whiskey

The temperatures have finally started rising here, and I’ve got drinks and picnic food on my brain. 🙂

How did this idea come about? Well, my friend Meghan at Fox and Briar is the queen of Irish Mule recipes. I don’t make cocktails too often, but whenever I see her photos, that drink just looks so refreshing, and I had to try it myself. I finally picked up some copper mugs, and I gave the Irish Mule my own little twist.

close-up of grapefruit Irish mule cocktail in a mug on the rocks with grapefruit slices

What’s in an Irish Mule?

An Irish Mule is similar to a Moscow Mule, but instead of vodka, Irish whiskey is used. An Irish Mule contains whiskey, ginger beer, and lime juice. In this case, I replaced the lime juice with grapefruit juice to make a grapefruit Irish mule cocktail.

How do you make an Irish Mule?

Add ice to your glass (preferably a copper mug). Pour in the whiskey and fresh grapefruit juice. Top up with ginger beer. Garnish with grapefruit wedges if desired.

two grapefruit Irish mules in mugs with a bottle of whiskey

I hope you will give this Irish mule recipe a try!

This grapefruit Irish Mule cocktail is a delicious variation of the classic Moscow Mule; it uses Irish whiskey instead of vodka. The perfect refreshing and easy to make party drink. Great for St. Patrick's Day or any day of the year. If you love ginger beer, you will love this cocktail!
5 from 1 vote

Grapefruit Irish Mule

This grapefruit Irish Mule is a refreshing cocktail that contains Irish whiskey, grapefruit juice, and ginger beer. It's very easy to make and only contains a handful of ingredients!
Prep: 10 minutes
Total: 10 minutes
Servings: 1 drink


  • Ice
  • 2 ounces freshly squeezed grapefruit juice
  • 2 ounces Irish whiskey
  • Ginger beer for topping the drink up
  • Grapefruit wedges for garnish (optional)


  • Squeeze your grapefruit juice.
  • Add the ice to you glass or copper mug. 
  • Add the grapefruit juice and whiskey to the mug. Top up with ginger beer and garnish with a wedge of grapefruit. Enjoy immediately. 


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If you’re looking for other St. Patrick’s Day recipes, you may also like my Irish whiskey pork chops or my Instant Pot Guinness Stew.

Hi! I’m Natasha.

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5 from 1 vote

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  1. kellie@foodtoglow says:

    5 stars
    Natasha, I would have never thought to use grapefruit juice and the whisky, but it sounds divine! So refreshing! A gorgeous, summery little drink. 😊😊

    1. Natasha says:

      Thanks so much, Kellie!! Yeah, it definitely worked out. My cocktail ideas don’t always work outside my brain, but this one did haha.