1.
In a bowl, combine cornflour, garlic, 1/2 of the ginger and 2 tablespoons of vegetable oil, stir well.
2.
Stir in the broccoli, sugar snap peas, carrots and green beans then mix well to coat with the oil mixture.
3.
In a large frying pan or wok heat the remaining 2 tablespoons of oil over medium heat.
4.
Sauté the vegetables for 2 minutes then add the soy sauce and water.
5.
Stir well then add the onion, salt and remaining ginger. Cook until the vegetables are tender but still slightly crisp.