This is an easy recipe for mini rice flour buns that don't require fermentation. Mix rice flour, cornstarch, brown sugar, rock salt, and baking powder together, then add strained yogurt and olive oil to make the dough. Knead the dough thoroughly until it becomes glossy, then divide it into three equal parts and roll them into balls. Steam the rolled dough in a steamer for 10 minutes, then lightly grease crumpled aluminum foil, place it on top, and bake in a toaster oven for 10 minutes. Steaming and baking results in a crispy exterior and a soft, chewy interior. They are best eaten fresh, but if you don't plan to eat them right away, wrap them in plastic wrap while still warm and freeze them to prevent drying and maintain their deliciousness. When reheating, lightly mist them with water.