Dal-bhat-tarkari lentils over boiled rice with curried veggies may be an acquired taste, but it is ubiquitous, safe, nutritious and cheap. Western-style dishes can range from pretty darn good down to definitely ersatz, depending on the ingredients and the cook having some idea how things are actually supposed to come out. Imagine feeding your Aunt Tillie's interpretation of Chow Mein to someone from China. That might be a test of someone's forbearance too.
Tea with milk and sugar, Indian biscuits and noodles are available in most teahouses for quick snacks along the way. For something a little more indigenous try asking for "kha-ja" which is something near popcorn, although local varieties of maize don't always "pop". Nevertheless it's cheap, filling and pretty tasty.
If you can find local spirits in the high valleys it's more likely to be "daru", distilled from grains and definitely less rough than normal raksi made from fruit. Chang beer made from millet is not to be passed up if you can get it made with boiling hot water. Otherwise you are taking a big chance.
