Zucchini Pupusas

Ingredients

• 4 cups shredded green cabbage
• 1 cup shredded purple cabbage
• 1 cup shredded carrots
• 1/2 cup finely chopped onion
• 1 tablespoon salt
• 1 teaspoon crushed oregano
• 1 cup apple cider vinegar or pineapple vinegar
• 1 cup water
• 1 pound tomatoes, coarsely chopped
• 3/4 cup chopped onion
• 1/2 cup chopped carrot
• 1/2 cup chopped red bell pepper
• 1/2 cup chopped green bell pepper
• 2 cloves garlic, chopped
• 1 to 2 dried chile de arbol (optional)
• 1 1⁄2 cups water
• Seasoning salt or regular salt, to taste
• 3 cups grated zucchini
• 1⁄4 cup finely chopped tomato
• 2 tablespoons finely chopped onion
• 2 teaspoons seasoning salt or regular salt
• 1/3 cup grated mozzarella cheese
• 1/3 cup grated cotija cheese (fresh or aged)
• 10 ounces (2 1/2 cups) masa flour, such as Maseca
• 2 cups warm water
• Vegetable or mild olive oil, for forming the pupusas