Firstly, add balsamic, white wine, maple syrup, blueberries, and salt bring to a simmer.
1/2 cup balsamic vinegar, 1/4 cup white wine, 1 tbsp maple syrup, 1/8 cup blueberries, 1/2 tsp salt
Once blueberries are cooked through add anchovy paste, garlic powder, and onion powder.
1/4 tsp anchovy paste, 1/2 tsp garlic powder, 1/2 tsp onion powder
Next, reduce by 1/3 and allow to cool. Use to season meats, as a glaze or as a salad dressing.
Store any unused portion in a sterilized glass jar with a tight-fitting lid in the refrigerator for up to two weeks.