1 bottle of balsamic vinegar
5 persimmons
2 sprigs of fresh rosemary
pinch of salt
Pour entire bottle of balsamic vinegar into a small saucepan. Place over medium heat.
Add persimmons, salt, and rosemary. Cook over medium-low heat until volume reduces by 1/4 to 1/2 depending on the desired thickness.
Remove from heat and allow to cool. Strain through a fine mesh sieve lined with cheesecloth. Transfer to a bottle, preferably dark colored. Store in refrigerator up to 30 days.