step 1
Toast coriander and cumin seeds in a small skillet over medium heat, stirring occasionally, until aromatic and slightly darkened, about 4 minutes.
step 2
Transfer to a spice mill and let cool.
step 3
Add crushed red pepper flakes. Process until finely ground. If you don't have a spice mill, use a pestle & mortar. Transfer to a small bowl.
step 4
Add remaining ingredients and mix.
step 5
Can be made 1 month ahead. Store airtight at room temperature.
step 6
Makes approximately 2-3 tablespoons