Wash quinoa and place it in a pan with 2 cups of water. Let it cook on low flame till quinoa absorbs the water. Add more water if necessary. In another pan, add 1 cup of water with peas, chopped cauliflower, diced potatoes and cook till soft to bite. Add these vegetables to quinoa. Also add ginger, chilli, thyme and stir well. Turn off the flame and immediately add coconut milk, salt, lemon and stir well. Keep the pan covered for 5 minutes. Top with coriander and serve immediately.