Rinse quinoa and put in a large saucepan with double its volume of cold water. Bring to a boil and cook uncovered for 10-15 minutes.
In a large frying pan, heat 2 tablespoons of the oil and fry the tofu until golden all over. Drain on kitchen paper and set to one side.
Heat remaining oil in a wok. Saute the onion and garlic, then add the carrots, cauliflower and capsicum. Stir fry over a medium heat for 3-4 minutes then add the leek, cauliflower, celery and cabbage. Stir in the tamari, sugar and lemon juice, spices, fresh ginger. Add the quinoa and continue cooking over a medium heat for a further 5 minutes stirring continuously. Season to taste with salt and pepper.
Serve topped with the tofu and sunflower seeds. This is delicious with mango chutney.