Tangy, buttery sauce you can pour on ravioli, meat, or vegetables.
In a small saucepan, bring the balsamic vinegar to a boil over medium heat.
Add garlic and stir. Let boil for 5-10 minutes, until it becomes thicker and reduced. Turn off the heat until you are ready to add the butter.
When you are ready to serve, add butter. Whisk in butter until it is melted and incorporated into a thick sauce. Enjoy.