re: What did we just eat, Vietnamese edition?

Wonton is correct but there's a variety of this "cake". As described, it is a sweet banana rice cake which I personally think is of dessert/refreshment. The main ingredients are: glutinous rice flour, a type bean, banana leaf(wrapper), and an "asian" banana. Everything gets wrapped in banana leaves, tied and are boiled for a hours until everything is cooked.

I personally don't like this variety of rice cake but prefer the one with pork and mung beans which are more prevalent during Lunar New Years when it's gifted to a household that celebrates Lunar New Years.