Name: The Ultimate ‘Otai (Tongan Watermelon Drink)
Prep time: 15 min
Total time: 45 min
Cuisine: Polynesian
Ingredients: 4 cups fresh watermelon, seeded and cubed; 1 cup fresh coconut milk; 1/2 cup fresh lime juice; 1/4 cup granulated sugar, or to taste; 2 cups cold water; Pinch of salt; Ice cubes, for serving; Fresh mint sprigs, for garnish (optional)

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Why You’ll Love This Recipe

I absolutely love this ‘Otai (Tongan Watermelon Drink) because it is the ultimate tropical refreshment. It is incredibly easy to make with just a handful of fresh ingredients, and it transports me straight to a sunny island paradise with every sip. This recipe is perfect for hot summer days, backyard barbecues, or any time you crave a light, hydrating, and naturally sweet drink that is bursting with flavor. Trust me, once you try this authentic version, you will never want store-bought juice again.

Ingredients

4 cups fresh watermelon, seeded and cubed
1 cup fresh coconut milk (from about 1 large coconut)
1/2 cup fresh lime juice (from about 4-5 limes)
1/4 cup granulated sugar, or to taste
2 cups cold water
Pinch of salt
Ice cubes, for serving
Fresh mint sprigs, for garnish (optional)

Directions

To begin making this incredible ‘Otai (Tongan Watermelon Drink), start by preparing the watermelon. Cut the watermelon into large cubes, making sure to remove all the seeds. Place the cubed watermelon into a large blender. Add the fresh coconut milk and fresh lime juice. If you are using a whole coconut, you can find detailed instructions on how to extract fresh milk from a coconut online.

Next, add the cold water, sugar, and a pinch of salt to the blender. The salt is crucial as it enhances the natural sweetness of the watermelon and balances the flavors perfectly. Blend on high speed until the mixture is completely smooth and frothy. Taste the ‘Otai (Tongan Watermelon Drink) and adjust the sweetness by adding more sugar if desired. You can also add a little more lime juice for extra tanginess.

Once blended, pour the mixture through a fine-mesh strainer into a large pitcher to remove any pulp or foam, ensuring a silky smooth texture. For an even smoother drink, you can strain it twice. If you are looking for another refreshing beverage to pair with this, check out my recipe for Coconut Limeade. It is a fantastic companion for a tropical-themed meal.

Refrigerate the ‘Otai (Tongan Watermelon Drink) for at least 30 minutes to chill thoroughly. Serve over plenty of ice in tall glasses. Garnish with fresh mint sprigs and a small wedge of lime if you like. The beauty of this ‘Otai (Tongan Watermelon Drink) is that it is best enjoyed ice-cold on a warm day. For a more authentic presentation, you can also serve it in hollowed-out coconut shells.

Servings and Timing

This recipe yields approximately 6 servings of ‘Otai (Tongan Watermelon Drink). The preparation time is about 15 minutes, and the total time, including chilling, is around 45 minutes. It is a very quick and easy drink to whip up.

Variations

For a fun twist, you can add a handful of fresh pineapple chunks to the blender along with the watermelon. This will give your ‘Otai (Tongan Watermelon Drink) an extra tropical sweetness. Another wonderful variation is to swap the coconut milk for unsweetened almond milk or oat milk for a different flavor profile. If you want a more grown-up version, you can add a splash of white rum or vodka to make a delicious cocktail. For a dairy-free and vegan option, this recipe is already perfect, but you can also use coconut cream instead of milk for a richer, creamier texture.

Storage and Reheating

The best way to store leftover ‘Otai (Tongan Watermelon Drink) is in an airtight container in the refrigerator for up to 24 hours. Because the drink is fresh, the flavors are best when consumed within a day. You should not reheat this drink, as it is meant to be served cold. If it separates after sitting, simply give it a good stir before serving over fresh ice. You can also freeze the mixture in ice cube trays to add to other drinks or smoothies later.

FAQs

Can I make ‘Otai (Tongan Watermelon Drink) ahead of time?

Yes, you can prepare the drink up to 24 hours in advance. However, for the best flavor and texture, I recommend making it on the same day you plan to serve it. The fresh watermelon flavor is brightest when the drink is freshly made.

What is the best type of watermelon to use?

For the most flavorful ‘Otai (Tongan Watermelon Drink), use a fully ripe, sweet watermelon. Look for one that feels heavy for its size and has a creamy yellow spot on the bottom. Seedless watermelons are perfectly fine and save you the step of removing seeds.

Can I use canned coconut milk?

Yes, you can use canned coconut milk, but I highly recommend using full-fat, unsweetened coconut milk for the best creamy texture. Avoid coconut water as it will make the drink too thin. Fresh coconut milk is always the most authentic choice.

Is this drink vegan and gluten-free?

Absolutely! This ‘Otai (Tongan Watermelon Drink) is naturally vegan, gluten-free, and dairy-free. It is a wonderful, inclusive beverage that everyone can enjoy.

How can I make it less sweet?

If you prefer a less sweet drink, simply reduce the amount of sugar or omit it entirely. The natural sweetness of the watermelon and the creaminess of the coconut milk provide plenty of flavor on their own. You can also add a bit more lime juice to balance the sweetness.

Conclusion

I hope you enjoy making and sipping this incredible ‘Otai (Tongan Watermelon Drink) as much as I do. It truly is the perfect taste of the Pacific Islands, and it is so simple to bring a bit of that tropical sunshine into your own kitchen. For another authentic island-style recipe, be sure to try my Tropical Fruit Salad. This drink is a staple in my home during the summer, and I am confident it will become a favorite in yours too. Cheers to refreshing, real, and delicious homemade drinks!