Since LME is just condensed wort, does it oxidize from oxygen exposure?
I'm just curious because I switched to AG a while ago, but recently brewed an oktoberfest ale extract batch for a party to save some time and I notice it seems to have that "stale" taste to it.
I definitely don't get this with my AG brews, so I was just wondering if it's possible that the LME I used was already oxidized before I even brewed my beer?
I know my procedure is sound, so I don't think I introduced oxygen into this beer myself. I suspect that the LME was stale.