"Water as you want" is not going to work.
How much water do I need? What will the dough look like when I've added enough water? Can you estimate how much I'll need with 500 gr of flour?
Is gr "grams"?
I can't believe you mean 5 onions.
Roll flat, not "beat"
Fry the dough until golden brown. (Fry a bit longer if you want it more crispy)
Drain the fried dough on a towel to remove some of the oil.
What do I do with the Bakwan?
Student or Learner