Vegetable Gumbo

Name: Vegetable Gumbo
Ingredients: 3 tablespoons vegetable oil; 3 tablespoons all-purpose flour; 1 small onion, chopped; 1 green bell pepper, chopped; 2 stalks celery, chopped; 3 cloves garlic, chopped; Kosher salt and freshly ground pepper; 1 tablespoon soy sauce or Worcestershire sauce; 1 teaspoon smoked paprika (preferably hot); 2 cups low-sodium vegetable broth; 1 pound kale or Swiss chard, stemmed and chopped; 1 10-ounce package frozen black-eyed peas; Brown rice, for serving (optional)