I pickup up this castella in Nagasaki when I was there a little while ago. It was nice and dense but not too sweet. Castella is very popular all around Japan but it most famous in Nagasaki. It obviously has Portuguese influence and is not what come to mind when you think of wagashi. I also re-stocked my favourite matcha, but I might have to switch to iced matchas pretty soon.
Tea, Sweets and Trails 