It's dinner time!

Ingredients

• 1 tablespoon vegetable oil
• 1 teaspoon mustard seed
• 1 teaspoon cumin seeds
• 1 small red onion, thinly sliced
• 1 tablespoon grated fresh ginger
• 4 cups grated zucchini
• ½ teaspoon chili powder
• ¼ teaspoon ground black pepper
• ¼ teaspoon ground cloves
• ¼ teaspoon ground cinnamon
• salt to taste
• 4 (10 inch) flour tortillas
• 4 fresh chives
• ½ cup sour cream