Take a frying pan and heat it on a low flame on your gas stove.
When the pan is sufficiently hot, put 3 tbsp cumin seeds, 2 tbsp fennel seeds, 1 tsp black pepper, about 20 pieces of fresh curry leaves, and 1 cinnamon stick about 1 inch in size.
Stir the spices continuously on a low flame for about 3 to 4 minutes to dry roast them.(Pro tip: Make sure that there is no moisture left in the spices. If it remains, the masala powder will lose its flavor and taste in a quick time). When the spices change their color to light brown and the fresh curry leaves are dry and smaller in size, turn the flame of your gas stove off. Let the frying pan sit for a while so that the spices cool off completely.
Now take a clean and dry grinder.
When the spices are cool enough, transfer them from the frying pan to the grinder.
Now add 1 tsp of black salt to the content in the grinder.
Then, add ½ tsp of table salt to the grinder.
Follow it with 4 pieces of green cardamom.
Then add 1 tsp of dry mint (pudina) leaves powder to the content.
Finally, add 1 tbsp of sugar to the grinder.
Now, grind them all into a fine powder.(Pro tip: You may strain the coarser grains to make them even finer. However, there is no harm in having a coarse powder. It will not harm). Now, transfer the powder into a bowl and your shikanji masala powder is ready to use.