It is a valuable and aromatic spice obtained by drying them with special methods, where the collection times of climate-specific peppers are important.
The features to be considered when buying a real isot are its smell, color and texture. 

When you smell it, you need to get a bitter smell. When you taste it, it should be a sweet bitterness.
True isot does not cause heartburn after consumption and its flavor is seductive enough to be addictive.