1/4 cup extra virgin olive oil
2 small yellow onions, chopped
4 cloves garlic, peeled and chopped into large chunks
2 jalapeño peppers, seeded and chopped*
2 (15.5 ounce) cans black beans, rinsed and drained
1-1/2 teaspoons salt
1/2 teaspoon ground cumin
2 tablespoons fresh lime juice, from one lime, plus more if desired
3 tablespoons water
1/4 cup fresh chopped cilantro, plus more for garnish (optional)