I have made mead by fermenting with the ginger beer plant sold by www.gingerbeerplant.net
, find them on Facebook also. I love everything I made with that GBP. This source even has their culture housed in a storage facility in Geneva ( I think that is where it is). The ferments are not aged, at least not in my home. Just be aware all GBP is not the same. The source I listed along with yemoos.com are the only two reputable sources I would ever recommend. In fact yemoos.com has a great explanation plus photos showing the difference between real GBP and water kefir grains. There is a company in the UK which sells 'retro' style goods and I compared their GBP culture to the one from gingerbeerplant.net and they are not the same thing; in fact I think the other culture was a variant of GBP plus water kefir grains. Both fermented the honey/water, but the end product was much different. And then, you have ginger beer plant made of bread yeast, ground ginger and sugar. I make an awesome scrumpy with GBP. I need to get more, since my son inadvertantly destroyed all of mine.