Asked a Satmere (learnt by the Rebbezchisogeinlaini in the 5720's so maybe it was after his time) and he hadn't heard of it, EliJelly did you hear anything?
If it turns out Satmer post Beirach doesn't I'm reserving the line:
Bobov "stole the yerisha"!
Lol no way a satmar would know what the Beirech or even The Rebbe ate for supper. Even if they would, they would only copy that if it's truly delicious. I just speculated how much the blintzes were really stressed on.
(Yerisha of Reb Sholom Eliezer? What was there to Yarshen?
He was known for his extremely Poshit hanhagah, although he was highly revered throughout Hungary, especially given he was the only son of Sanzer rov in Hungary and lived up until the war. Reb Shlomo Bobover famously said it was here in America when he learned from the Hungarian chassidim what a big zeide he had.)