sweet potato, corn & black bean hash

Ingredients

• 2 teaspoons canola oil
• 2 medium onions, chopped
• 1 medium sweet potato, peeled and cut into 1/2 inch cubs
• 2 cloves garlic, minced
• 1 - jalapeno pepper, seeded and minced
• 4 teaspoons ground cumin
• 1/2 teaspoon salt
• 1/2 - 3/4 cups water
• 3/4 cup frozen corn kernels
• 1 can (15 oz.) black beans, drained and rinsed
• 2 tablespoons fresh cilantro, chopped
• 1 - lime, cut into wedges
• - tortilla (optional)
• - sour cream (optional)
• - cheddar cheese (optional)