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Jan 26, 2020

Watermelon Martini

This watermelon martini is refreshing and light, and begins with a puree of fresh watermelon.

Watermelon martini with Midori

This is a "skinny" watermelon martini. How is this cocktail skinny? First, it has a short ingredient list with only spirits, lime juice, and pureed watermelon.

Second, instead of vodka, I've substituted soju for vodka in the cocktail.

What is Soju? 

Soju (or Shochu), is a liquor that is Korean in origin, and made from grains such as rice, wheat, or barley (Wikipedia).

In Korea soju can have varying levels of alcohol by volume (ABV). In California, soju has been permitted for sale for restaurants that have only a beer and wine license as long as it contains less than 50 proof (25 percent ABV), so that is typically what is available here. As a bonus, that means half of the calories of vodka.

We were introduced to soju at one of our favorite brunch spots, where they use it in bloody Marys. We decided to seek soju out and play around with it at home.

Watermelon martini with Midori liqueurs

The brand of soju I used is from a Japanese formula, and produced in Vietnam. It's 48 proof and made with barley. If you want to enjoy it as intended, serve it over rocks with a splash of water. The label also recommends substituting it for vodka in your favorite cocktail.

To make this skinny watermelon martini, I also added Midori, a melon liqueur that tastes a lot like honeydew melon. It adds some sweetness as well as more melon flavor.

Depending on your definition of "skinny" in a cocktail, use 1/2 to 1 ounce of the Midori. With one ounce, your cocktail will clock in at about 150 calories. With 1/2 ounce of Midori, your martini will be just 100 calories. I went with the full ounce of Midori. This cocktail was delicious.

I made this cocktail with fresh limes from our Bearss lime tree in our little patio back yard. They look like little lemons, but they are definitely limes. This year, this tree has been incredibly prolific. I've been freezing juice from these amazing juicy limes all winter.

You might also need.... 

For this recipe, I used this immersion blender (affiliate link) recommended by America's Test Kitchen to puree the fresh watermelon. It's a really cool tool for pureeing hot soups without having to deal with moving hot liquids to a blender. 

For another great watermelon drink, be sure to try the Watermelon Rum Cocktail

For more cocktails on Karen's Kitchen Stories, be sure to check out the cocktail section of my recipe index. Most of the recipes are pretty skinny, but not as skinny as this Watermelon Martini.

This week's From our Dinner Table theme is skinny cocktails. I'm excited to check out everyone's slimmed down cocktail recipes!

We share Recipes From Our Dinner Table! Join our group and share your recipes, too! While you're at it, join our Pinterest board, too!

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Skinny Watermelon Martini

This skinny watermelon martini has just four ingredients: Soju, Midori, lime juice, and pureed watermelon. It's delicious and refreshing. Shake the ingredients in an ice-filled cocktail shaker and pour it into a chilled martini glass.

Watermelon martini with Midori and pureed watermelon

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Skinny Watermelon Martini

Skinny Watermelon Martini
Yield: 1 cocktail
This watermelon martini is refreshing and light, and begins with a puree of fresh watermelon.


  • 1 ounce freshly squeezed lime juice
  • 1/2 to 1 ounce Midori Liqueur
  • 1 ounce Soju
  • 2 ounces pureed fresh watermelon


How to cook Skinny Watermelon Martini

  1. Add the lime juice, Midori, and soju to an ice filled cocktail shaker. 
  2. Shake the ingredients and pour them into a chilled cocktail glass. 
  3. Add the pureed watermelon. 
  4. Enjoy! 
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martini, watermelon, skinny

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