The supertonic is the scale note that is one step up from the tonic. So, if the scale is in C, then the tonic is C and the supertonic is D.
Although it seems like a logical extension of the whole East India IPA thing, India Black Ale (or American Black Ale) was actually conceived of right here in the USA. Historically, the British dark beers have always been low to moderate in alcohol and very lightly hopped, so a British India Black Ale didn't actually exist. But we like hops and need little encouragement to add lots to dark beers as well as pales.
TBB's India Black Ale is malted to be black and strong, with a relatively dry feel. Strong hints of coffee predominate, although there is no coffee in this beer. As with the IPA, five hops are used in this beer, although in different proportion to balance the slightly more acidic dark malt character.
American-Style Black Ale
ABV:
6.90%
Twelve Bar Brews
Woodinville, Washington