Ask Mr. Wizard

The Effects Of Cold-Water Extraction

TroubleShooting

Royce Faina — Philadelphia, Pennsylvania asks,
Q

I’ve been contemplating brewing a table beer and was reading up on BYO.com about it. I was wondering if after a cold-steep mash can those grains be mashed at typical saccharification rest for use in a second beer or does the cold-steep rob the grain’s enzymes? Would a decoction mash of those grains be useful if the diastatic power is now lower?

A
Homebrewers are always pushing the envelope for cool ideas and this one is certainly doable. Let’s start with a quick review of what happens in a cold mash. When milled grains, be
Response by Ashton Lewis.