In the event of a total societal crash, there will be no more cheeseburgers. Not even out on your little homesteading farms:
Waldo Jaquith tried to make a cheeseburger from scratch. He ran into logistical problems that he did not
Further reflection revealed that it’s quite impractical—nearly impossible—to make a cheeseburger from scratch. Tomatoes are in season in the late summer. Lettuce is in season in spring and fall. Large mammals are slaughtered in early winter. The process of making such a burger would take nearly a year, and would inherently involve omitting some core cheeseburger ingredients. It would be wildly expensive—requiring a trio of cows—and demand many acres of land. There’s just no sense in it.
A cheeseburger cannot exist outside of a highly developed, post-agrarian society. It requires a complex interaction between a handful of vendors—in all likelihood, a couple of dozen—and the ability to ship ingredients vast distances while keeping them fresh. The cheeseburger couldn’t have existed until nearly a century ago as, indeed, it did not.
I think to some extent it depends on where you are located. Areas with longer growing seasons could probably make it work. I don’t understand why you need 3 cows. One for milk (cheese) and one to slaughter. Since McDonald's uses the meat from dairy cows that are past their milking prime (it makes their meat leaner), maybe you could figure a way to even use the same cow.
On the contrary side, I am not sure if he factored in all the ingredients that go into Heinz ketchup (click on bottle, then click on nutritional information):
You better get a clipper ship and head It off to the East Indies (or was the West Indies?) to get your spices.TOMATO CONCENTRATE FROM RED RIPE TOMATOES, DISTILLED VINEGAR, HIGH FRUCTOSE CORN SYRUP, CORN SYRUP, SALT, SPICE, ONION POWDER, NATURAL FLAVORING.