Chicken Arroz Caldo

• 5 stalks green onion (finely)
• 3 garlic (cloves minced)
• 1,700 ml water
• 400 gr chicken
• 120 gr rice grains
• 30 ml fish sauce
• 16 ml vegetable oil
• 5 gr ginger (fresh finely sliced)
• 1 slice onion (finely sliced)