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The Galaxy Magic Mule – A Vodka Moscow Mule

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Last Updated on August 22, 2021 by The Noms

This color changing galaxy cocktail is like science! So neat to see it change color! Check it out, and make it yourself!


Back when we were kids and watching Bill Nye the Science Guy on TV, little did we know that some of those science experiments that we played about with would end up being useful when it comes to making drinks! Seeing some of the results felt like magic (especially when you are a kid!) Now that we are grown, we know it really was just the proper application of science!


Color Changing Cocktail

We saw a cocktail that slowly changed colors as the ice melted at one of our local cocktail bars. We then knew that we were going to have to spend a little time behind our bar figuring out how we could capture a little bit of that magic! The result is our Galaxy Magic Mule, a classic Moscow Mule with a little bit of magic ice to bring a showy flair!


This post contains sponsored content brought to you by JoyJolt Premium Glassware. We received these double wall mugs from JoyJolt to promote in this post, but all opinions and views presented here are 100% our own. This post contains affiliate links for products that we think you as readers might find useful, and we make commission off of these! For more details about our affiliates, click our Disclosure and Contacts Page.


Galaxy Magic Moscow Mules in clear glass mugs with limes and silver canister in background. Color changing cocktail


Eating With Your Eyes

When you talk to great chefs and bartenders, you might hear a common theme about how we not only eat (or drink in our case) with our taste buds, but we also eat with our eyes! We were out with friends a few weeks ago and stopped in at one of the great local cocktail bars here in Omaha that are always trying to make something new and exciting.


This particular evening, Mrs. Nom ordered a cocktail that came with a blue ice cube. It melted slowly changed the drink to a beautiful deep purple.


Galaxy Magic Moscow Mule in clear glass mug with blue straw. Limes, flowers and jigger in background. Color changing cocktail


Everyone in our party was fascinated by the color changing cocktail. It not only looked awesome, but tasted delicious, too! Seeing this sort of excited reaction from our friends (who are not nearly as big of cocktail nerds as we are!) tickled something in our blogger brains which said “MAKE THIS!!!”


Butterfly Pea Flower

The next day we started doing a little research about a color changing galaxy cocktail. We discovered a whole trend of bartenders who were playing with the ingredient that was key to their success, the Butterfly Pea Flower!


Galaxy Magic Moscow Mule in clear glass mug with blue straw. Color changing cocktail


Interested in buying some Butterfly Pea Flower Tea to make this at home?Get it HERE!


Science in Cocktails?

The Butterfly Pea Flower is found all across equatorial Asia, where it was used in traditional medicine and as a natural food coloring. Prized for its deep blue color that it is able to impart to food, butterfly pea flower has one other very unique characteristic, it is a natural litmus strip! For those of you that might have dozed off in science class, a litmus strip is a chemically treated strip of paper that is used to determine the pH (acid or base) of a solution.



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In the case of the butterfly pea flower, when it is exposed to acidic liquids like citrus juice or carbonated water, it will turn purple. This reaction is the key to the magic! The reaction changes creating a colorful swirl of colors that looks like you are peering far into a galaxy! Speaking of a galaxy cocktail, check out this awesome lemonade from our friends at The Flavor Bender!


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Galaxy Magic Mule in clear glass mug with blue straw. Limes and flowers in background. Color changing cocktail

Paper Straws / Jigger


Cheers to Color Changing Cocktails

To make the Galaxy Magic Mule, we started out by brewing some Butterfly Pea Flower tea. This tea when brewed is a deep dark indigo color with a very mild (almost flavorless) tea flavor. We wanted to slow the chemical reaction down (when you add acid the reaction is really fast) so we froze the tea into cubes. Then this slows the reaction down significantly as it only reacts once the ice starts to melt. This results in the gorgeous gradient between blue and purple as the reaction starts to take place.


Galaxy Magic Moscow Mule Cocktail changes from blue to purple in clear glass mugs with blue straws. Limes in background. Color changing cocktail


What Ingredients are Needed for the Galaxy Moscow Mule?

  • Lime Juice
  • Vodka
  • Ginger Beer
  • Butterfly Pea Flower Tea (more info below!)


The primary ingredients of a Moscow Mule (lime, vodka and ginger beer) are all acidic to a various degree. So, when we added the ingredients to the ice filled mugs, the color starts to change, creating a dramatic color changing galaxy cocktail! Normally we would serve a Moscow Mule in the traditional copper Moscow Mule mug. But, in this case, a spectacular color changing galaxy cocktail like this deserves to be shown off, so we used some of our glass double wall mugs from JoyJolt to serve these Galaxy Magic Mules!


These mugs from JoyJolt are perfect for Mules or Coffee!


Like this recipe? Try these below, too!

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Also, don’t forget to follow us on Instagram and tag #gastronomcocktails so we can see all the wonderful recipes YOU recreate from this site!


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Galaxy Magic Moscow Mule Cocktail, purple and blue cocktail in glass mug. Limes, jigger and flowers in background
Yield: 1

The Galaxy Magic Mule - A Vodka Moscow Mule

Prep Time: 20 minutes
Freeze Time: 6 hours
Total Time: 6 hours 20 minutes

A color changing cocktail, a twist on the classic Moscow Mule, and so pretty!


Magic Blue Ice

  • 8 flowers of Butterfly Pea Flower Tea
  • 2 cups hot water

Galaxy Magic Moscow Mule

  • 2 oz vodka
  • .50 oz freshly squeezed lime juice
  • 4-6 oz ginger beer
  • crushed ice
  • Crushed "Magic Blue Ice"


For the Galaxy Magic Mule

Partially fill the mug with crushed clear ice.

Top with crushed Magic Blue Ice.

Add lime juice.

Add vodka.

Add ginger beer.

Top with additional Magic Blue Ice.

For the Magic Blue Ice

Add hot water to the Butterfly Pea Flowers.

Allow to steep for 3-4 minutes.

Strain out flowers.

Pour into ice cube trays and freeze.

Crush ice and use in cocktail.

Nutrition Information:



Serving Size:


Amount Per Serving: Calories: 173Total Fat: 0gSaturated Fat: 0gTrans Fat: 0gUnsaturated Fat: 0gCholesterol: 0mgSodium: 9mgCarbohydrates: 11.1gFiber: 0.1gSugar: 10.1gProtein: 0g

Did you make this recipe?

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A beautiful color changing cocktail, this Galaxy Moscow Mule is a combination of ginger beer, vodka, lime juice and our Magic Blue Ice. We made the blue ice with Butterfly Pea Flower Tea and used the lime juice to change the color!


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Sunday 23rd of May 2021

This looks great and I want to try this out but I can only find cloudy ginger beer and I saw in your video that yours is clear. Will this make a difference? What brand of ginger beer did you use in the video?


The 'Noms.

Sunday 23rd of May 2021

Hey there! It shouldn't make much of a difference at all, but if you want the kind we were using, we used Crabbie's Ginger Beer, which has a pretty limited distribution now, I think. Bundaberg and Goslings would work pretty well! Cheers!

Jillian Manger

Wednesday 9th of August 2017

Wow! So cool! I'd like to try making this for our Eclipse Party. Do you think you could do it in a big batch or does it need to be single servings?

The 'Noms.

Wednesday 9th of August 2017

I think you could do a big batch, just not to add in the ginger beer until you are ready to serve. Or maybe have bigger ice chunks, so it slows the color changing if you add the ginger beer? Let us know how it goes, we haven't made a big batch, so we would love to know! Good luck!

LuLu B - Calabrisella Mia

Wednesday 5th of July 2017

This would be such a hit at any gathering! I love it!

The 'Noms.

Monday 10th of July 2017

Thanks so much! We thought so, too! Cheers!

Megan McDuffie

Friday 30th of June 2017

What a fascinating post! I could watch the video all day...

The 'Noms.

Sunday 2nd of July 2017

Thanks so much! Cheers!

The Southern Thing

Thursday 29th of June 2017

This drink is so pretty! Definitely giving it a try!

The 'Noms.

Sunday 2nd of July 2017

Thank you! Hope you do!

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