well, there the basic filling that ppl use , like bean pastes, dried fruits, shredded meats ect but I like to brunch out with different filling , I use dried fruits soak with honey , peanut better / jelly , shredded ham & cheese ! I like to use american ingredient mix w/ Asian touch lol . When i was oversea , to past time , i like to cook and experience with different ingredient . The coffee I'm talking about are the kind that sale by street vendors ( she/he push a small cart along the street/village where i stay at ) , sometime I have to chase one down if I don't wake up early enough , seriously , I was running after this one old lady after she past my house (well, the house i stay at) . They usually have a sit stool ready and i just wait for her to make the ice coffee , it's a small amount of coffee w/ ice & milk , sometime i would pay her extra to just sit/wait for me till im done with my 3 or 6 cup. It was addicting . Vietnam have the best coffee .