"Come round for a final drink in the sukkah on Hoshaana Raba." (Glinert)

"I once heard that kreplach enables cheaper cuts and mince to be served in a bekovede way which was necessary in der alter heim when poverty-stricken Yidden wanted to serve meat on semi-Yomtovim like erev Yom Kippur, Hoshanah Rabbah and Purim." (source)