en, that was 板油,油渣 is fatty meat with油,but have 渣 when the grase are melt, 板油 have no渣 if they are heated.
It is fat, white solid fat, under some part of the prok's skin, could be the chest.:p :lookaroun
:D Guess you did not get chance to try it when you were back in Leader's hometown, Gaga.:D
It is like beacon, they got fixed-in grease to fry themselves in a hot pan,or the fat will malt and run away while leave crispy but sticky rice cake with Guihua Flavour in them...two pieces for a...