Both look delishious.

When I was even more poor than I am now, I would reuse the metal caps. If you remove them carefully, you can press them on again. With plastic bottles I find the bottles get uncleanable long before the caps do (I get around 10x uses out of a plastic bottle).

I might be wrong, but I assume agricultural barley, is not malted.

So are you saying I can stop blaming my shitty brewing methods and start blaming the yeast! I like it.