Add the balsamic vinegar and white sugar to a small saucepan. Stir it until the sugar is dissolved.
Place the saucepan over medium heat and bring the mixture to a gentle simmer.
Reduce the heat to low and let the mixture simmer for about 15-20 minutes, stirring occasionally with a wooden spoon.
As the glaze cooks, it will gradually reduce by at least half and slightly thicken. You'll know it's ready when it coats the back of a spoon.It will continue to thicken as it cools.
Notes
Tips:
Reduction time varies by the size of the saucepan.
Cooking the glaze over low heat allows it to slowly reduce and develop its deep, rich flavor. Avoid using high heat to prevent burning.
Storage: After allowing the balsamic vinegar glaze to cool to room temperature, transfer the glaze to an airtight container or clean glass jar. Store it in the refrigerator, and your balsamic glaze will keep for about one month, ready to be used whenever your dishes need that perfect finishing touch.