In a small, dry stainless steel, carbon steel, or cast iron skillet, toast cumin, stirring and tossing frequently, until fragrant. Transfer to a small mortar and pestle or electric spice grinder and grind to a coarse powder. Transfer ground cumin to a small mixing bowl. Repeat process with the coriander seed, then add to the bowl with the ground cumin. Add peanuts to the mortar and pestle or spice grinder and crush to a coarse powder. Scrape into bowl with spices. Repeat with the sesame seeds , then add to the other ingredients. Season with salt, then use as desired.
