Captain Ron said:
Been working with Wyeast 3333 as a base culture. Seems to me that fermenting temps are the key to controlling phenolics. What kind of conversion rates are you getting?
--ron
If I do this recipe as a wit, hold my ferment temps slightly above 70 (I want some character/phenolics to the beer with a wit - fairly true to style not that I really give a damn anymore about style) and use a WLP 300, I can convert 75% or better, if not in the low 80%'s... and the wonder batch of a rare 90% (which rarely happens).
However, if I use that crappy WLP 320 (American Hefe Yeast) it tends to sit pretty high sixties or very low seventies, but if you want a very clean finish it is a good type to go with.
When I go for a higher gravity brew (which is pretty much everything I do these days), instead of a starter I'll brew a small version of the recipe a couple of weeks before to warm the yeast up and get a happy population. Split the drop out between two fermenters and have an explosive fermentation and great attenuation (blow off tubes are your friend).
This also works well if you want to control the phenolics because you have a huge population of very active yeast that will work (literally) under 70* with very little aggitation or other hassling of the yeasties.
I really perfer this technique to stepping up starters for two reasons. First off, I end up with a much bigger slurry that is much more active than a test tube baby. Secondly, it gives me a "jr" version of the beer I'm about to brew so that I can tweek the recipe if needed for spice, off flavors in ferment temps or adjusting the grain bill. When I brew for comps I do every beer in this manner.
But hey, that is just me. RDWHAHB (Relax don't worry have a home brew)!