Green Gumbo

Ingredients

• 3/4 cup flour
• 3/4 cup peanut oil (or vegetable oil)
• 1 large white onion (chopped)
• 1 large green bell pepper (chopped)
• 2 jalapeno peppers (chopped, optional for spicy)
• 2 celery stalks (chopped)
• 4 cloves garlic (chopped)
• 2 tablespoons Cajun seasoning (or to taste)
• 8 ounces andouille (sliced into ¼ inch slices, optional)
• 8 ounces smoked ham (diced, optional)
• 6 cups vegetable stock (or chicken stock for non-vegetarian)
• 2 pounds mixed greens (collards, mustard, turnip, chard, dandelion, etc.)
• 2 bay leaves
• 1 tablespoon file powder (for serving, if desired)
• Cooked white rice for serving (if desired)