rice flour (I used packaged rice flour) • water (1 liter) • tapioca starch (about 3/4 cup) • scallion oil • ground beef (300 grams) • onion • wood ear mushrooms (200 grams) • dried shiitake mushrooms (100 grams) • large garlic cloves • large dong leaves or banana leaves • Cooking oil, salt, pepper, MSG or bouillon powder