A little less city, a little more touching nature

We journeyed outside Tokyo for a couple days. Today we hope to catch sight of Mt. Fuji, clouds permitting. We stayed one night in the historic Fujiya Hotel and had tempura at a delightful little mom-and-pop restaurant where I was the only white person. The chef, a bent-over tiny man, who cooks right in front of a counter of customers (three Japanese couples who entered just before us and had clearly made reservations), brought additional freshly cooked pieces of tempura to our table after our initial order had been served. The tender white fish was superb, but I wish I hadn’t looked at the big board of pictures at the store front on our way out and seen the animal it once was. Just picture the cooked version… just picture the cooked version…
[Deleted scenes: Anna grumpy, hungry, tired, and habitually annoyed by everything her mother says and does. Sounds about right? Also, if you can imagine traveling with a 15-year-old girl who is providing the soundtrack for the trip, you might get the title of this post. I gotta amuse myself somehow.]
Question: does anyone know what this is? It was among the coffee and teabags in our hotel, and it slightly dissolved in hot water. I chickened out on tasting it :(. 

View from my breakfast spot in our room this morning
Waiting to cross Lake Ashi on one of these replica ships.