In a small saucepan over medium-low heat, gently boil the balsamic vinegar for 4 minutes until thickened.
Add the brown sugar and boil for an additional 2 minutes longer to reduce the mixture. Remove from heat and let cool.
Makes 1/4 cup.
* Commercial-grade balsamic Vinegar is the least expensive ones that you find in your grocery store.
Faux Aged Balsamic Vinegar Recipe: https://whatscookingamerica.net/Sauces_Condiments/FauxAgedBalsamic.htm