Put plenty water in a cooking pot and place cleaned chicken breasts; add in bay leaves and about 1 tbsp Hungarian Vegeta seasoning, bring to boil (until chicken is cooked).
Meanwhile, using your food processor or a blender, make a paste of garlic, ground white pepper, celery salt, lemongrass powder, coriander, turmeric powder, and ginger; before processing, add in about 1/2-1 tbsp vegetable oil to make it easier.
Heat a little vegetable oil, saute paste; at this stage, the chicken should be cooked already; add in the sauted paste into the pot; stir well; add in chopped onion springs
Adjust taste by adding more Hungarian Vegeta seasoning, salt, and also MSG.
Boil further for 15 minutes to let the paste blended well.
Ensemble all to a serving bowl, and pour soup; serve along Indonesian sambal especial for Soto Ayam.