if you've got a brush with good stiff non metalic bristles you can unjam many square inches at a stab. if you do this after aver few batches it prevents buildup from happening that takes the tedious cleaning methods to remove.
I generally take off the grill and heat up a little with a hand-held torch, to loosen up some of the build up, then scrape off. Next I spray an ample amount of some non-toxic cleaner like "Simply Green" and let soak for a little bit. Then get like a BBQ grill brush & brush off any remains, then wipe down. I know it sounds like a lot, but it keeps the air flow running more efficient. Then when I do my maintenance cleaning, everything goes faster... :lol: