Ridiculous.
Grow your lettuce and tomatoes in containers, in the window, a cold frame or a greenhouse.
Slaughter your beef, butcher and grind, then freeze. You can buy freeze-dried or canned beef patties, if you think freezing is problematic. Or just freeze the butchered meat and grind as needed. Or use venison. It makes a great burger if you have some saved fat to add to it when grinding.
Cheese takes months to make and then keeps for months more.
Bake buns as needed. They can be baked in a Dutch oven over a fire or on a wood stove, if necessary.
The mustard crop has been sparse this year. And don’t get me started on the ketchup and pickle plants.
You mean like this?
Once I get to the pet store, I’ll have the stuff for a DIY version. I have the perfect window.