Wow, what an awesome thread. I am just about ready to give it a go with Wayne's last recipe as follows but have just a couple of questions.
Looking at supplier options, the Weyermann Wheat I am seeing is Pale Wheat. Is this correct for the style? The SRM looks right.
Based on my suppliers Hallertau pellets (3.8%) the IBUs will be more like 20.5 per Beersmith. Do I lower the .ozs, add later or just call this close enough to the original 17.5 units? (Definitely like the non-bitterness of the commercial Blue Moon).
Been using rice hull on all my AG brews but this is the first I have heard of pre-soaking. What is the reason for this?
Finally, I might be crazy but I seem to see somewhere buried in either this thread or another whit thread about pitching two smack packs in a 5 gal batch. Is one 1056 enough?
The original recipe uses US 2 Row Pale Malt and US White Wheat Malt. Wayne has suggested if you wish to tweak the original recipe you can substitute Vienna for the regular 2 Row. I am cracking a keg of this variation this weekend. I used regular White Wheat Malt not the Weyermann Pale. I also used 1.5# of Flaked Oats.
I presoak (not very long.. maybe a couple of minutes) my rice hulls in hot water because they absorb a bunch of water and it helps me hit my mash temps and runnings volumes better.
I always use a starter so only use one smack pack but the amount of yeast you need is generally dependent on the amount of attenuation you expect . higher yeast cell counts for higher gravity beers. Your recipe above if it is for 5.25 gal calcs to an estimated OG of 1.068 at 75% efficiency in my Beersmith which is a little high for this style. Im only using about 10# of grain in my recipes with an OG of 1.057 at 75% eff. Check out My Malty for more about this but if you dont use a starter, you could use two smack packs and should be OK. This kind of beer does not need two if you target an OG of 1.054. I make sure my yeast is a fresh as possible, and I use a starter to make sure the yeast is active before I get to pitching time. If the yeast ends up being bad or too old I can then get another pack and can pitch directly on brew day if I need to. Proper aeration of the wort is also a factor. Make sure you shake up your carboy good prior to pitching so your yeast gets enough O2 to work. Underpitching is just as bad as over pitching so the right amount is really dependent on a lot of factors including age of the smack pack and how it was stored in transit to you.
Finally 1.5 oz of 3.2% Hallertau for 60 min gives you about 17.7 IBUs in a 5.25 gal batch.
Hope this helps!