Essence fried fish is common in all kinds of Kun videos, and black powder entertains itself. Because frying fish with essence is homophonic "want to go to jail", people make fun of it. Eating or not means "want to go to jail". Just like sunspots and oil cakes.
The essence of fried fish is homophonic stalk, and homophonic stalk is an online buzzword, which refers to replacing homophones or homophones with homophones or homophones.