I too am preparing for potential supply line collapse
Discussion
Same.
I'm planning to build a freeze dryer for this purpose.
Why do you want a freeze dryer for this? That's typically the last method of food preservation.
More nutrients are preserved, longer shelf life and ,
re-constituting works better.
This is not a exhaustive list. There are many reasons astronaut food is freeze dried.
"Typically" not done because of the barrier to entry. The equipment is expensive and harder to source ie; Walmart doesn't sell them but they do sell dehydraters and canning equipment.
But I think I can fabricate a vacume chamber to be installed in a repurposed an old chest freezer for under $300 including the pump.
Good luck
Don't know if all those GRAPES will last very long tho 😆
Why do you think there will be a supply’s shortage? And when?