The following chart contains 2700 unique brews produced by Irish Breweries between 1997-Present.
Apparently we are pushing the limited for D3.jsv3 in the browser so it may be a bit sluggish. It is however navigable down to the individual brew name simple by clicking on subcategories to zoom it.
And because we can – once we have a very nicely formatted JSON file – we have another hierarchical view of the same brews. The loaded dots expand with all brews for that type and subtype. Fully zoomable of course.
Another useful stemChart of Irish Beer Types: http://bl.ocks.org/shawnday/raw/d4aec330bcc0c97e59d011fc38f3a442/