Garden fall harvest in a deep root cellar and a dehydrator for drying summer crops when its hot. Use glass storage jars for storing your dried crop. Also consider a few 60” tanks of Co2 from your local welding supply for making dry ice in emergencies. Always go with a chest type freezer as suggested in a post above.... and learn to cure and smoke beef , fish, pork . Small chicken coop will keep you in fresh eggs and a fried chicken now and then. Consider as well a small pond you can stock with pan fish. Rainwater collection will keep water available for irrigation of the gardens etc....
Frugal ......just my suggestions, ideas.
/deep root cellar/
My Dad was in his teens during the Great Depression...
They would cover some vegetables in a furrow (ditch)with dry
hay above and below the vegetables and then covered with at least six inches of dirt...potatoes and probably other root crops...Maw would send him out to dig up a few more pre-harvested potatoes every few days... ( ; )
My understanding is that in war torn Europe...they put other foods in furrows...or at least under ground /cache/(before computing)...rodent and water protection is required...Lewis & Clark lost one cache I believe.