I found a local cafe that carries this! They make Japanese style crepes, and I went just to try one of their teas, since I saw they offered Japanese green teas on the menu.
Wasn’t I pleasantly surprised to see that the organic sencha they were offering from the menu was from Den’s Tea!
This is awesome. Citrusy, deep (almost savory) flavor, lovely sweet aftertaste. No bitterness or astringency. I’ve never had an organic sencha (that I know of) before. I always got the impression from things I’ve read that the organic farming methods haven’t yet measured up to the standard ones (in Japan) for making as tasty a tea… well, I was wrong! Or rather, my impressions have now been corrected.