Having recently tasted the maple vinegar made by @Kerry Beal, I would have to say that this is definitely a recipe that rocks. The link is to a recipe in Popular Science but it is very similar to the one in the New York Times. The one I have linked to uses the metric system of measurement.
If you have a membership to the New York Times then you can do a Google search on its version. If you don't have a membership to the New York Times cooking site it's free and well worth it.