I have to agree that this must be true. A decocotion which boils the grains will not leech tannins if the mash ph is proper so I doubt the crush would leech tannins with proper ph.
No yeast, no beer. No beer, no civilization. Therefore, we really have yeast to thank for all our modern-day conveniences and tasty beer
*Member: The HBT Sweaty Fat Guys Cigar club