In a couple of the ryokan we visited during our October trip to Japan, we enjoyed the elaborate kaiseki ryori meals I'd been longing to try. We did fairly well on writing notes on much of what we were served, but occasionally managed to miss.
One product I've been trying to remember more about was a dense pale savoury slab, I think made from rice flour, which had teeny tiny whole baby potatoes embedded in it, which made for beautiful patterns, as this stuff was served sliced. It didn't have a particularly strong flavour.
The clearest photos I have are actually from a food market, not the kaiseki meals themselves, both from Takayama.
Can anyone help?