@Olly398 & @jb000 thanks. I think it’s salty enough, but I think from what you’ve described I’m storing it too dry. There’s no liquid, certainly not enough for the cabbage to be submerged. So it might be the cabbage after all - I’ve only ever done it with leftover white cabbage and it doesn’t really express any liquid at all.
I've done quite a lot of bacon, ham and salt beef curing over the years so I'm fairly confident it's got enough salt. Last batch of kimchi actually had way too much. I think it is the type of cabbage I'm using, so I'll try a batch with Chinese leaf and see what the difference is.
@Olly398 & @jb000 thanks. I think it’s salty enough, but I think from what you’ve described I’m storing it too dry. There’s no liquid, certainly not enough for the cabbage to be submerged. So it might be the cabbage after all - I’ve only ever done it with leftover white cabbage and it doesn’t really express any liquid at all.