Cauliflower and Chickpea Curry

Name: Cauliflower and Chickpea Curry
Ingredients: 1 medium-large cauliflower (about 1 3/4 pounds/800g), trimmed; Sea salt; 2 tablespoons sunflower oil; 3 onions, chopped; 4 garlic cloves, chopped; 1 teaspoon freshly grated ginger; 2 teaspoons ground coriander; 2 teaspoons ground cumin; A large pinch of dried chile flakes; 2 star anise; 1 (14-ounce/400g) can plum tomatoes, chopped, any stalky ends and skin removed; 1 (14-ounce/400g) can chickpeas, drained and rinsed; 2 teaspoons garam masala; A good handful of cilantro, chopped; Sea salt and freshly ground black pepper