That is called Mitarashi Dango, but I don't know whether or not they have any at this store.
They have Dango in the freezer section for sale
I know they have mochi, but i haven't heard of it on a stick like that. It sounds delicious. I will visit Japan this spring and i will have to try that.
They have mochi for sure not sure if they serve that though. Its a grocer and a japanese restaurant.
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