Cabbage Soup

 

1 medium head of cabbage, chopped 

1 large onion, chopped 

2 large carrots, sliced 

3 celery stalks, chopped 

1 can (14.5 oz) diced tomatoes 

6 cups vegetable broth 

1-2 cloves garlic, minced 

1 teaspoon dried thyme

1/2 teaspoon ground turmeric (optional, for added health benefits) 

1/2 teaspoon black pepper 

1 tablespoon lemon juice (optional, for a bright flavor) 

Salt, to taste