Pollo Guisado

Name: Pollo Guisado
Ingredients: 2 tablespoons olive oil; 1 whole chicken, cut up; salt and ground black pepper to taste; 1 medium onion, chopped; 4 cloves garlic, minced; 0.5 cup sofrito; 2 potatoes, peeled and cubed; 2 cups chicken broth; 1 (8 ounce) can tomato sauce; 1 (1.41 ounce) package sazon seasoning; 0.5 teaspoon ground cumin; 1 bay leaf; 2 tablespoons cold water; 1 tablespoon cornstarch