Using ingredient mushrooms at a time in oil until golden

Chinese Stuffed Mushrooms

• 25 mushrooms (fresh)
• 8 mushrooms at a time in oil until golden (hot)
• 3 green onions
• 1 stalk celery
• 1 egg (white)
• 700 ml vegetable oil
• 140 ml water (drained whole)
• 130 gr all purpose flour
• 120 ml milk
• 65 gr cornstarch