An exotic Indian seasoning…
There are a few lightly fiery seasonings that are musts for authentic Indian cuisine, and sambar powder is among one of the most important. It’s used to make sambar, a delicious lentil-based soup that’s often a precursor (or a side) to the main Indian meal. Sambar powder, too, can be a substitute to rasam powder for making rasam – a thin soup that’s typically served atop rice.
In both cases, it’s the popular Indian kashmiri chili that provides a light simmer of heat. These are mild peppers (1,000 to 2,000 Scoville heat units), but enough are called for in the recipe that you’ll feel the spiciness.