Hello folks, I was gearing up to make a few test batches of sauce when I realised the bottles I was planning to reuse have the inserts in the plastic caps. I have some beer bottles that are 275ml so only slightly bigger than the standard sauce bottle, but I would have to crown cap them. Any thoughts on this. Would the acidity be too high for the metal or would these do the job? I am thinking some beers are around ph 3.5. The sauce will be eaten within a couple of weeks. Thanks!