The barren landscape of deserts means there’s no vegetation or fruits, nor is it an environment for any sort of eateries. So, once bottles of water have taken their place in your backpacks, next in precedence would be food items, specifically, non-perishable food items that can last the entirety of your desert trip. The likes of nuts, dried fruit, energy bars, and jerky make excellent high-energy snacks for all kinds of desert adventures. If you are planning a rather long trip out in the desert, a portable stove might be a good idea and consider taking some electrolytes also with you to replenish salts.