Potato Gumbo

Name: Potato Gumbo
Ingredients: 1/4 cup, plus 1 tablespoon vegetable oil; 1 medium white onion, diced; 2 cloves garlic, finely chopped; 6 slices smoked bacon, cut into large dice; 2 stalks celery, diced; 1 bunch Swiss chard, coarsely chopped, leaves and stems separated; 1 large green bell pepper, seeded and diced; 1/4 cup flour; 2 bay leaves; 2 cups chicken stock; 2 cups water; Pinch cayenne; 2 pounds white potatoes, peeled and quartered; Salt and freshly ground black pepper