There is a wealth of vinegar making information in this thread but it can be a challenge to comb through and assemble it all. I found this How To Make Vinegar guide from Sunset magazine helpful to pull things together.
An interesting note to close the loop back to eG is that the authors of that Sunset article got their vinegar mother from Paula Wolfert (@Wolfert) who got it from @Abra, who shared much vinegar making information in this very thread and in her eG blog and also offered, years ago, to share that old French mother of hers with other eG members.
