You don't need much water (5ml), just a little is enough.

One pack a day for those over one year old and half a pack for those under one year old.

There are also said:

Within 3 months, 1/3 packs per day;

Half a pack a day for 3 to 6 months;

2/3 packs a day for 6~ 12 months;

/kloc-one pack a day for more than 0/2 months.

It is best not to eat hot food for half an hour before and after. It is recommended to eat between meals.