Black Bean Salsa

Here's the recipe (it's a big hit at parties):

1 (15 oz) can black beans, rinsed and drained
1 cup seeded, chopped tomato
1/2 cup chopped onion
1/4 cup chopped fresh cilantro
1 serrano pepper, seeded and chopped
1 clove garlic, minced
1 tbs balsamic vinegar
1/4 tsp salt
1/8 tsp pepper

Combine all ingredients in a medium bowl; toss well. Let stand one hour.