Calamari in Balsamic Reduction

I had this at a restaurant and ran home to figure out how to make it. It's such a delicious and unusual starter for a meal.

• Ready In: 30 mins
• Serves: 4-6

Ingredients

• 1 1⁄2-2  cups  balsamic vinegar
• 1  lb  calamari, rings uncooked

Directions

1. Bring a saucepan 3/4 full of water to a boil.
2. Add the squid and cook until just firm (about 2-3 minutes)-do not overcook.
3. Drain and rinse immediately under cold running water.
4. Drain well and set aside.
5. In a saucepan over low heat, simmer the balsamic vinegar (stirring occasionally) until it becomes thick and syrupy.
6. It should reduce to about 1/2 cup or maybe less.
7. Toss the calamari with the balsamic reduction and serve warm.