2, beef jerky, containing a lot of fat and protein, once Genghis Khan's fighters swept the world, beef jerky on Mongolian grassland with rations, light weight, small volume, can quickly fill the stomach;
3, instant noodles, this does not need to explain too much;
4, dried sweet potatoes, rich in starch and plant fiber, can replenish energy and have a good feeling of fullness;
5, beer, known as liquid bread, needless to say ~