How to Make Kakigori Syrup from Scratch: Strawberry, Matcha, Yuzu and More

Store-bought kakigori syrups are convenient and they work well. But making your own gives you something no bottle can: full control over flavor intensity, zero artificial ingredients, and combinations that do not exist commercially. A strawberry syrup made from fresh June strawberries at peak ripeness tastes entirely different from the concentrate version, and anyone who eats your kakigori will notice.

The technique is simple. What matters is concentration, temperature discipline, and choosing the right fruit for the season.

The base: simple syrup

Every kakigori syrup starts from the same foundation: equal parts sugar and water by weight. Combine in a saucepan, heat over medium until the sugar dissolves completely, then remove from heat before it reduces significantly. You want a syrup that is fluid and clear, not a thick caramel.

One important detail: make it sweeter than feels right. The shaved ice dilutes the syrup as it absorbs, and what tastes intensely sweet in the pan will taste balanced in the bowl. A common mistake is making a correctly-sweetened syrup that becomes bland once poured over ice. Increase the sugar ratio to 1.5:1 or even 2:1 if you want vivid, saturated flavor.

Strawberry syrup

The most versatile and the most popular. Use fresh or frozen strawberries: frozen often produce a deeper, more concentrated flavor because the freezing process breaks down the cell walls and releases more juice.

Method: hull 200g of strawberries, combine with 150g sugar and 150ml water in a saucepan. Bring to a simmer over medium heat, stirring occasionally, for 8-10 minutes until the fruit softens completely. Strain through a fine mesh sieve, pressing the solids to extract all the liquid. Cool completely before using. The syrup keeps for 10-12 days refrigerated.

Matcha syrup

The key with matcha is preventing clumping. Make your simple syrup first, let it cool to around 70C, then sift the matcha powder directly into the warm liquid. Whisk vigorously until completely smooth. Do not add matcha to boiling syrup: the heat degrades the flavor and color.

Ratio: 200ml simple syrup, 2 tablespoons ceremonial-grade matcha. Adjust concentration to taste. The result should be a deep green with a clean, slightly bitter finish. Pair with condensed milk and shiratama mochi for the classic Ujikintoki preparation.

Yuzu syrup

Yuzu juice has a distinctive citrus aroma that concentrates beautifully in a syrup. Because yuzu is intensely acidic, use a 1:1 ratio of yuzu juice to simple syrup as a starting point, then adjust to your preferred brightness. Avoid boiling the juice: add it to warm (not hot) syrup off the heat to preserve the aromatic oils.

Yuzu syrup pairs exceptionally well with condensed milk and fresh citrus segments. It also works as a base for more complex combinations: yuzu and white peach, yuzu and lychee, yuzu and elderflower.

Shikuwasa syrup

Sharper and more aromatic than standard citrus, shikuwasa produces one of the most distinctive kakigori syrups available. The technique is identical to yuzu: combine with simple syrup off the heat at a 1:1 ratio and adjust to taste. The color is a pale yellow-green that looks striking over white shaved ice.

We stock shikuwasa juice from Okinawa directly if you want to skip sourcing the fruit. It ships internationally and works perfectly for syrup preparation as well as for freezing directly into flavored ice blocks.

White peach syrup

A summer specialty in Japan, where white peaches are taken very seriously. Peel and stone two ripe white peaches, puree the flesh, then combine with equal-weight simple syrup and heat gently for 5 minutes. Strain for a smooth syrup or leave slightly pulpy for a more textured result. White peach syrup is at its best the day it is made: the delicate flavor fades quickly even refrigerated. Make it fresh for each session.

Using gum syrup as a base

For anyone making syrups regularly, switching from plain simple syrup to gum syrup as the base is worth it. The gum arabic stabilizes the syrup, prevents crystallization in the fridge, and gives the finished product a slightly silkier texture that integrates more cleanly into the shaved ice. The flavor difference is subtle but the shelf life improvement is noticeable.

General rules

Always cool syrups completely before pouring over ice. Hot or warm syrup melts the shaved ice instantly and destroys the texture. Use a squeeze bottle or small pitcher for controlled pouring: the goal is even saturation through all layers, not a puddle on top. And make more than you think you need: it is better to have leftover syrup in the fridge than to run out mid-session.

Browse our full syrup range for ready-to-use options, and see our toppings collection for everything to finish the bowl.