It is not marked tradeskill, but it is used in tradeskills to create one of the optional items for the All Hail the King task.
There is a ground span clue in Esiante called "Discarded Note" that has lore that reads, "What is that stain? No-one will figure the four-fold by two secret of my nan."
This is a vague clue as to the recipe below, I believe.
RECIPE:
EVERWARM BREAD
2 x Unebbing Embers
Bread Tin
4 x Phoenix Dough (crafted)
The recipe does not learn and appears to be a high trivial (300+ Baking).
Edited, Jan 22nd 2019 3:41am by GOMN