In a medium size cast iron or stainless steel pan, add the rice grains and dry roast them over medium heat until the grains turn into golden brown color, about 15 minutes.
Shake the pan periodically so that the rice grains aren’t burnt and toasted evenly on all sides. You will smell a nice aroma as the rice becomes toasted.
Once the rice grains are toasted to golden brown, set them aside to cool to room temperature then transfer them into a spice or coffee grinder and pulse a few times until they are coarsely grind.
You can use them right away to sprinkle over Thai larb, Thai beef salad, Thai mushroom salad, and more. Store the extra in an airtight container in a cool and dry place for up to 1 month.
Notes
Toasted rice powder has a crunchy and nutty aroma that’s similar to the flavor of toasted puff rice.
Take care not to burn the rice grains and avoid grinding them into a fine powder. They should be coarse ground. If you have a mortar and pestle, use that!
Use a cast iron, wok, or stainless steel pan as they retain heat more steadily.
Non Stick pan is not ideal for dry roasting as the pan will get quite hot and it might damage your cookware.
Adjust the stovetop temperature based on the type of cookware that you use. Cast iron and wok retain heat better, so it might require less heat over time compared to stainless steel.