Cuban Black Beans

Ingredients

• 2 teaspoons olive oil
• 1⁄2 onion, finely diced
• 2 garlic cloves, minced
• 2 tablespoons minced green bell pepper
• 3 tablespoons chopped fresh cilantro
• 1 (15-ounce) can black beans, with their liquid
• 1⁄2 cup water, or more if needed
• 1 bay leaf
• 1⁄8 teaspoon ground cumin
• 1⁄8 teaspoon dried oregano
• 1 teaspoon red wine vinegar
• 1⁄4 teaspoon salt
• 1⁄8 teaspoon freshly ground black pepper