On: Engineer eats efficiently for $2.50 a day (2016)

[sn9]

Buttermilk and potatoes can get you close to 100% nutrition.

Plug 4 large potatoes and 6 Cups of whole buttermilk into a site like Cronometer. 2000 Calories and 100+% of everything but Vitamins E and K, which you might get from foraged greens.