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)