Indian spinach (Saag)

Ingredients

• 16 2/3 cups spinach or 1 pound/ a big bag of
• 1 onion pink, finely chopped
• 2 garlic cloves
• 2 tablespoons ginger finely chopped
• 1/2 teaspoon turmeric
• 1/2 teaspoon chili powder
• 1/2 teaspoon garam masala powder
• 1/2 coriander powder
• 1 cardamom pod green, *optional
• 3 tablespoons plain yogurt
• coriander leaves