Note: Roasted rice powder is available at many Asian markets in a small jar or packet. It can also be easily made by gently toasting plain rice (for this recipe you will need to toast about 2 Tablespoons of rice) in a dry skillet over low-medium heat until the rice becomes fragrant and lightly golden, 7-8 minutes. After the rice cools, grind it into a powder using a clean coffee grinder or a mortar and pestle.