I always wanted a plate (or two) of Beef Rice Noodle Rolls or beef "cheong fun" when my parents and I used to go to San Francisco's Chinatown for brunch and then grocery shopping every weekend. I just loved the steamed rice noodle rolls with filling and drizzled with a sweet soy sauce.
Combine the rice flour, tapioca starch, wheat starch, and salt. Add olive oil and 1 1/2 cup room temperature water and stir with a whisk until the batter is smooth. Stir in the boiling water, set aside and allow the batter to rest at least 30 minutes.
Mix together ground beef, cilantro, cornstarch, soy sauce, baking soda, sugar, and sesame oil (if using). Add water and stir until the meat almost resembles a paste, add an extra tablespoon of water if needed. Use a spatula and divide the beef into 6 sections, set aside to marinate.
While the batter is resting and the meat is marinating, brush two 9x9 inch metal baking pans with oil or use non-stick cooking spray.
Use a small metal steaming trivet or shape aluminum foil into 1 inch balls. Add enough water so that the water level is higher than the rack and that there's still enough room for the baking pan under the lid (I use a 14 inch All Clad 4 qt. braising pan with a domed lid), bring the water to boil.
Cover and steam for 1 minute until set, use a spatula to shape 1/6th of the beef mixture flat approximately 1/4 inch thick, 1 1/2 inch wide and 8 inches long. Carefully transfer the flattened piece of beef on to the rice flour sheet down the center of the pan. Cover and steam for an additional 4-5 minutes.
Immediately place a second baking pan into the steamer, check that the pan is floating and add more water to the steamer as necessary.
Stir the batter and repeat steps 7-10 above to steam a second rice noodle roll.
In the meantime, use a silicone spatula to carefully loosen the first rice noodle sheet at the edge that is closest to the beef and second spatula to loosely fold the sheet over the beef, loosen the other side and fold that over, transfer the roll onto a serving plate and set aside.
Prepare the first pan for a second round by washing and spraying with non-stick cooking spray. Flatten another piece of beef. Repeat until all the batter and filling are used up.
Plate three rolls per serving dish. Right before serving, steam the finished rolls in the serving dish for a few minutes to warm them up. Cut each roll cross-wise into 4 pieces and serve with a light drizzle of the sweet soy sauce, to taste.
Calories are an estimate. Usually the sweet soy sauce is drizzled on for flavor and not consumed. Use a reduced sodium soy sauce and drizzle sparingly for those who are watching their sodium intake.