Chicken Saag (Chicken Spinach Curry)

Ingredients

For 6 servings

• 1 tablespoon canola oil
• 1 medium onion, diced
• 2 large garlic cloves, finely chopped
• 1 tablespoon fresh ginger, finely chopped
• 1/2 tablespoon garam masala
• 1 teaspoon ground cumin
• 1 teaspoon ground coriander
• 1/4 teaspoon ground turmeric
• 1/4 teaspoon cayenne pepper
• 1/2 teaspoon salt
• 1 1/2 lb (650 g) chicken breast, cut into bite-size pieces
• 1 tablespoon tomato paste
• 1 can (14 oz/ 400 g) crushed tomatoes
• 6 cups (200 g) fresh spinach
• 1/2 cup (100 g) Greek yoghurt