well the main ingrediant is sudafed yep you can find it in most cold and flu tablets or even nasal spray nasal spray.
if you choose to use the pills crush the pill up till it i dust boil it,
(if yousing nasal spray same procces just no crushing)
the get the contents and place into a cup add water stir run the bottom end of the cup under cold water and keep stiring until disolved and cyrstals apear
and walah ! you have ICE CRACKHEAD