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Summer doesn’t just slap you with heat—it rolls in heavy, thick, and relentless. You sweat in places you forgot existed, your shirts stick, and even ice cream starts to feel too rich. Enter: watermelon mochi. This isn’t your average dessert. It’s the cool kid at the party, quiet but unforgettable. Chewy, juicy, and whispering sweet nothings of watermelon in every bite, this mochi is the antidote to the sweltering season. It doesn’t try hard to impress. It just does.
Made with glutinous rice flour and fresh watermelon juice, it delivers the best of both worlds: the chew of mochi and the refreshing slap of watermelon. No ice cream centers, no artificial dyes—just real flavor packed into soft, pillowy bites. Making it is simple. You don’t need to be a sushi chef or a dessert wizard. If you’ve got a microwave and a blender, you’re halfway there.
I stumbled on this recipe the way you stumble on most good things—by accident. A leftover watermelon, a craving for something sweet, and a kitchen experiment gone very right. Now it’s a staple in my summer routine, a dish that cools the bones and stirs the soul. Think of it as a love letter to the season—humid, lazy afternoons, cold drinks, and the soft resistance of mochi against your teeth.

Why You’ll Love This Recipe
- Incredibly Refreshing: Perfect for hot summer days when you want something light but satisfying.
- Minimal Ingredients: Just a handful of pantry staples and fresh watermelon.
- No Fancy Equipment Needed: Microwave-friendly and blender-optional.
- Unique Flavor: Real watermelon juice gives it a subtle, fruity sweetness.
- Kid-Friendly: Fun texture and flavor that appeals to all ages.
- Naturally Colored: No dyes, just the honest hue of watermelon.
Ingredients
- 1 cup glutinous rice flour (mochiko)
- 3/4 cup fresh watermelon juice (strained for pulp)
- 1/4 cup sugar (adjust to taste)
- 1/4 cup cornstarch (for dusting)
- Optional: a pinch of salt to balance sweetness
Instructions
- Juice the Watermelon: Blend fresh watermelon chunks until smooth, then strain through a fine sieve to remove pulp. You need about 3/4 cup of juice.
- Mix the Batter: In a microwave-safe bowl, combine the glutinous rice flour, sugar, and pinch of salt. Slowly stir in the watermelon juice until smooth and lump-free.
- Microwave in Intervals: Cover the bowl loosely. Microwave on high for 1 minute. Stir. Repeat in 30-second intervals, stirring each time, until the mixture becomes a sticky, translucent dough (usually around 2.5 to 3 minutes total).
- Dust and Knead: Generously dust a clean surface with cornstarch. Scoop the dough onto it and let it cool slightly. Dust your hands and gently knead the dough for a minute.
- Shape the Mochi: Divide the dough into equal pieces and roll into balls or flatten into disks. Keep dusting with cornstarch to prevent sticking.
- Chill and Serve: Refrigerate for 30 minutes before serving for a cool, chewy treat.
Tips & Variations
- Use Seedless Watermelon: Saves time and effort when juicing.
- Try Filling It: Add a small dollop of sweet red bean paste or whipped cream inside each mochi.
- Infuse More Flavor: Add a splash of lime juice or mint extract for a twist.
- Make It Vegan: This recipe already is, but double-check your sugar if you’re strict (some are processed with bone char).
Note
Don’t over-microwave. The dough can dry out fast and become rubbery instead of soft. Stop as soon as it turns translucent.

Serving Suggestions
Serve chilled with a wedge of fresh watermelon on the side. These mochi bites pair well with iced green tea, lemonade, or even a splash of prosecco for adults. Want to go fancy? Dust them with powdered sugar and plate them on banana leaves. Great for backyard parties, picnics, or just a midnight fridge raid.
Nutrition Information
Per piece (assuming 12 pieces):
- Calories: 70
- Carbohydrates: 16g
- Sugars: 5g
- Protein: 1g
- Fat: 0g
- Fiber: 0g
- Sodium: 5mg

User Reviews/Comments
“Tried this on a whim and it’s now my favorite summer snack. Super easy and my kids gobbled them up!” – Janet R.
“I love that it uses real watermelon juice. Not too sweet, just perfect.” – Tony W.
“Tastes like summer in a bite. I added mint and it was amazing.” – Elise K.
FAQs
Can I use store-bought watermelon juice?
You can, but fresh is always better. Store-bought juice may be pasteurized, dulling the flavor. If you go that route, check the label for added sugars or preservatives.
How long does watermelon mochi last?
It’s best eaten the same day, but you can store it in an airtight container in the fridge for up to 2 days. The texture hardens over time, so eat it fresh when possible.
Can I freeze these?
Technically yes, but the texture changes. Mochi gets tough when frozen and thawed. If you must, wrap each piece in plastic wrap and thaw in the fridge.
Is there a stovetop version?
Yes. You can steam the mixture in a heatproof bowl for about 20 minutes instead of microwaving. Stir halfway through for even cooking.
Can I use other fruits?
Definitely. Try mango, cantaloupe, or even strawberry. Just keep the juice-to-flour ratio consistent.
Conclusion
Watermelon mochi isn’t just another sweet—it’s a moment. A bite-sized pause in the chaos of summer. It’s simple, it’s refreshing, and it lets the flavor of real watermelon do all the heavy lifting. Whether you’re a mochi veteran or new to the chewy game, this recipe brings something special to the table. So when the sun’s beating down and your ice cream’s melting too fast, reach for something different. Reach for something better.
For more on mochi’s origins and its role in Japanese culture, check out this article on Wikipedia.
Print
Refreshing Watermelon Mochi – A Summertime Delight
Ingredients
- 1 cup glutinous rice flour (mochiko)
- 3/4 cup fresh watermelon juice (strained for pulp)
- 1/4 cup sugar (adjust to taste)
- 1/4 cup cornstarch (for dusting)
- Optional: a pinch of salt to balance sweetness
Instructions
- Juice the Watermelon: Blend fresh watermelon chunks until smooth, then strain through a fine sieve to remove pulp. You need about 3/4 cup of juice.
- Mix the Batter: In a microwave-safe bowl, combine the glutinous rice flour, sugar, and pinch of salt. Slowly stir in the watermelon juice until smooth and lump-free.
- Microwave in Intervals: Cover the bowl loosely. Microwave on high for 1 minute. Stir. Repeat in 30-second intervals, stirring each time, until the mixture becomes a sticky, translucent dough (usually around 2.5 to 3 minutes total).
- Dust and Knead: Generously dust a clean surface with cornstarch. Scoop the dough onto it and let it cool slightly. Dust your hands and gently knead the dough for a minute.
- Shape the Mochi: Divide the dough into equal pieces and roll into balls or flatten into disks. Keep dusting with cornstarch to prevent sticking.
- Chill and Serve: Refrigerate for 30 minutes before serving for a cool, chewy treat.
Notes
Don’t over-microwave. The dough can dry out fast and become rubbery instead of soft. Stop as soon as it turns translucent.