the way i always have done it is to start with the glass tilted but still pour down the middle, tilt the glass straight once its about 2/3 full, of course later if the head is huge and earlier and pour harder if head is weak.
as for cleaning, i use a hot water soak with a "green" or "natural" soap. Followed by a hot water rinse, wipe off any water on the outside. Glass will look brand new
