The phrase "whole stash" refers to having or using all of something valuable or important, usually referring to a collection or supply of something. Full definition
Make a batch of Rosemary and Thyme Roasted Nuts to give to friends and family — or hoard the whole stash for yourself! (takeabiteoutofboca.com)
Tooru calls Chi on the phone and tells her he found a whole stash of mango Sakeru Gum that he is sending her by bike messenger. (sbnation.com)
So if you want to go through your whole stash before you wash, it'll take you at least four days to go through 24 diapers, especially if you ever supplement with disposables — which brings me to my next point... (nourishinglittlesouls.com)