Kuromitsu is a sweet dark brown sugar syrup made with unrefined black sugar. Drizzle it on your favorite Japanese desserts or other sweet dishes and drinks such as pancakes and ice cream.
In a medium saucepan, add kokuto, granulated sugar, and water. Soak the sugar in the water for at least 10 minutes to soften the sugar if your sugar is the chunky type.
Heat the saucepan on low-medium heat. Stir until sugar is fully dissolved. Bring to a boil. Turn off the heat and let it cool. The syrup will thicken slightly as it cools.
Transfer the syrup to an airtight container and store in the fridge for up to a week.