Hi all, doing some cleaning and found some 2 row grains that I must have misplaced at some point. I had them crushed when I bought them in December 2020 and I stored them in food saver bags with the air pulled out - room temp about 70-75. I have a strong feeling they are either stale or rancid (can they become rancid?). Should I just toss them or do you think there is a chance they might be decent after 10-11 months?
If they were stored vacuum sealed in a dry place, then at worst, the grains might be a touch on the stale side, but otherwise they should be perfectly fine to brew with. The caveat is if they have any mold on them. Give them a close inspection. If there’s any mold whatsoever, toss them.
I agree with those who suggest tossing them. As I understand, once the grains are milled they should be used in a couple days. A pound of grain costs under $2 from most HBS stores and in my opinion, $2 isn’t worth taking a chance.
Nah milled grains last a very long time if, as has already been said, they are stored properly, which mainly means keeping them in a dry place. I once used 2 year old milled grains, and the beer was fine.
But even if stored in a dry place, they could still get moldy due to moisture produced and brought in via pest infestation (e.g. the Sawtoothed grain beetle). So always a good idea to check old grains for mold and never to use them if any is seen.
Pre-milled is prior to milling. You are thinking of grains that are “pre-milled” at the HB supply before shipping. I have learned, and have always practiced, milling my grains within minutes of mashing to achieve maximum freshness.
I won’t speak for everyone else but I consider “pre”-milled to mean grains that are milled well in advance of use, and stored for some amount of time. This definition seems kind of self-evident from the context of this thread.