That really is the name of the glaze recipe – “Old Black Magic” – in case you think that I’m making that up!  It is related to the Honey Celadon glaze that you have seen other places in my gallery, but it is a bit richer and deeper in the color development.  It also tends to be very glossy, which sometimes gives the photographer fits!  The coloring on this particular piece reminds me of the expression, “still water runs deep”.  It has a “baritone” feel about it – sturdy and strong with no particular need to raise its voice.  About five inches wide and four inches tall.