Roasted Cauliflower with Yoghurt and Pomegranate - A better choice!

Ingredients

• 1 large cauliflower
• 1 onion peeled, sliced
• 1 bunch mint, roughly chopped
• ¼ cup pomegranate arils
• 30gm pine nuts, toasted
• 300gm Greek-style yoghurt
• 1 garlic clove, minced
• 2 tbsp lemon juice
• 2 tbsp tomato paste
• 1 tbsp red chilli flakes
• 1 tbsp coriander seeds
• 1 tsp caraway seeds
• 1 1/2 tsp sumac
• 145ml olive oil
• Salt
• Pepper