Sticky Rice Dumplings with Mung Beans, Pork and Shrimp (Banh It Tran)

I had forgotten how much I love Vietnamese food!  It is so flavorful.  These dumplings are made with a bland rice dough wrapped around mashed mung beans, pork, shrimp and garlic scapes (!) seasoned with sugar, salt and fish sauce.  The best part is a magical sweet-sour-hot sauce that gets drizzled over the dumplings right when they come out of the steamer.  It's made with rice vinegar, fish sauce, sugar, chile peppers, lemon juice and green onions.  The rice dough soaks it right up and it makes the other flavors in these dumplings simply pop.