I agree, with the idea that not 100% of the fermentables are from mashing. PM also allows extract Brewers without the required equipment to brew beers they may not otherwise be able to brew. Although now extract companies are producing far better and different extracts than when I started (Maris otter, Munich, rye).
Here batch sparge youtube1 is a link to what got me started with All Grain. I should point out that the video was made by someone who learned batch sparging from Denny’s website, so you’ll want to check that out as well. Have fun!
