What is the most authentic and delicious beef offal in Guangzhou?

Guangzhou has eaten n kinds of beef offal. Generally speaking, I think Linlin beef offal of Shangxiajiu tastes the best, but there are several kinds of Shangxiajiu. I remember walking from Renmin Road to Liwan Square, and the first Linlin giblet on the right hand side tastes the most authentic.

In addition, there is an old wet nurse who sells well at the intersection of Shenwufang and Renmin Road, but in the form of a ghost and can only be met when the opportunity is good.