2
Place a wide frying pan or wok over medium heat. When pan is hot, add 2 teaspoons of the oil, then the sliced small onion; cook, stirring occasionally, until onion is pale golden (2 to 3 minutes). Add celery carrot, ginger, and water; cover and cook, stirring occasionally, until carrot is tender-crisp to bite (3 to 4 minutes). Transfer the vegetable mixture to a bowl and set aside.