Short answer, don’t try. We need u003ca href=u0022https://www.healthline.com/nutrition/essential-amino-acids#definitionu0022 target=u0022_blanku0022 rel=u0022noreferrer noopeneru0022u003e20 amino acidsu003c/au003e to survive, as well as a variety of vitamins and minerals. But there are some u003ca href=u0022https://www.popsci.com/nutrition-single-food-survival/u0022 target=u0022_blanku0022 rel=u0022noreferrer noopeneru0022u003esingle survival foodsu003c/au003e, like potatoes, that will get you by for longer than others in a survival situation. So, to avoid needing to ask this question, check your supply of emergency food, and be honest about how much variety you have. Your body and taste buds will thank you if you make an effort to mix things up.