Balsamic Black Bean Salsa

1 (15 ounce) can black beans, drained and rinsed well
1 (15 ounce) can whole kernel corn, drained well
½ medium onion finely diced (about 1/3 cup)
½ cup finely chopped fresh cilantro
1 (7 oz.) can salsa verde (I used Herdez brand)
Juice of 1 lime
½ teaspoon cumin
¼ cup balsamic vinegar
Salt and pepper to taste

Mix all of the ingredients together in a medium bowl and cover with plastic wrap. Let the salsa marinate for a few hours (or overnight before serving). Drain most of the liquid from the salsa before serving. Serve with tortilla chips.