no, pierre is formerly of the royal kitchen, grandfather to luca. The spy is someone else, forget the name, but much younger, and not blonde, with much shorter hair.pierre is the dude that keep using disguise to do his culinary spying work right?
I think not all teas can be used. I usually see people use kelp tea ,which is salty, not bitter, for chazuke. Since it is made from kelp, it is rather similar to dashi made from konbu, so it isn't that strange.still can't wrap my head around chazuke that uses tea as "broth"