rice hulls + beta glucanase helps ease the pain of brewing with lots of wheat or rye. I use an all in one to mash / boil, so I have a few concerns with wheat beer.
- scorching. these brews leave congealed residue that sinks to the bottom far worse than other mash bills. This gets scorched on the burner element and can cause an overtemp fault.
- stuck mash. It JUST. WON'T. DRAIN.
- very poor flow through the grains.
The last one can be a batch killer. I'm forgetting the order, I'm sure, but I did ok with my first hefeweizen all grain and I think I had 2 or 3 under my belt when the local club had a roggenbier at the sampling table. I put together a mash bill at about 55% rye, and went to it.
It was a bad brew day, I got terrible extraction, visibly bad recirculation flow & I missed target by a bunch. I went with it anyway but in retrospect, enough went wrong I should have never even t/f to the fermenter. After it was done fermenting I asked myself out loud "why did you put this in the fermenter dumbàss?" That beer SUCKED and I pitched it.
It would be about 18 months until I tried again - about November '25 IIRC. In the intervening time I brewed a bunch of beer with rye up to 30% and between rice hulls, beta glucanase and paying close attention to the kettle temp and power settings, I got better at getting good recirculation and flow through the grains so my extraction was better, efficiency improved, etc.