I was a catholic school girl myself but my husband, Don was a student there.
Correction on your spelling of "Juice"...It was spelled Joost and was run by a man named, Henry Joost. That place had the greatest thick shakes I have ever tasted, served from those stainless steel shakers, ice cold.
I met my husband in that ice cream parlor and this August we will be married 60 years !!!!!
Great memories....wonderful times growing up in the Heights .