Tea
It traditionally made with strong black tea, butter, and salt, it is mixed in a large churn and known as gurgur cha, due to the sound of mixing it. similar to tea traditionally drunk elsewhere in central asia, it's more like soup than tea elsewhere, it can be refreshing and invigorating if you can get use to it. sweet tea cha ngarmo is common now, made indian style with lots of milk and sugar.
Beer
chang is traditionally made from barley; it has a yeasty taste slightly similar to sake.