Mornin',
it is a regional specialty from around 100 miles of you.
The whole hog places used to try and find a use for the WHOLE hog.
It is an acquired taste.
Chef Rick's Liver Mush/Pudding
This is one of several approaches.
The hash that is runny and served over rice would also have a large proportion of liver cooked in it.
This version does not.
S C Barbecue Hash