It is possible to buy commercially made Indian spice powders, but making your own yields a fresher, better tasting powder and is not at all time consuming. They are easy to make at home. A coffee grinder works well for grinding the spices.
Adds aroma and depth of flavour without any chile heat.
2 tbsp black peppercorns
¼ cup coriander seeds
¼ cp cumin seeds
1 tbsp cloves
2 teaspoons green cardamom seeds
About an inch of cinnamon stick broken into a few pieces
Mix all ingredients together in a small bowl. Preheat a cast-iron or other heavy skillet over medium heat, and dry roast spices, stirring constantly with a wooden spoon, for 3 to 4 minutes, until very fragrant. Pour spices back into the bowl, let cool for a few minutes, then grind to a powder in a coffee grinder or spice grinder. When completely cooled store in a clean glass jar. Use in recipes or sprinkle on fresh corn or hot poppadoms.