Culture to make vinegar?

A friend has lost his vinegar culture and asked me to provide either a local source, or a recommendation for an organic, vinegar culture (I believe the object is to make red wine vinegar, if this makes a difference).

Anyone have an idea?

See this thread for some recommendations/thoughts.

Matt wrote:See this thread for some recommendations/thoughts.

Thanks, Matt. I had searched, but apparently not with the proper terms.

"Mother" is a strange term (although it makes quite a bit of sense); and one I only learned when I saw that original thread.