Pinch Cayenne Pepper
Pinch Cayenne Pepper is a dry seasoning used in small amounts for aroma and flavor. Add gradually, taste as you go, and refresh it when the smell turns dull.
Identity
Dry seasoning
Use small amounts and refresh stale jars.
Dry seasonings spread quickly through a dish. Add a little at a time, bloom in fat when the recipe calls for it, and replace the jar when the aroma turns flat.
Wikimedia Commons
Reference image
Pinch Cayenne Pepper reference image.

Source: Wikimedia Commons
Substitutions
Acceptable
Pinch Cayenne Pepper -> Two Dashes Hot Sauce
1 pinch cayenne pepper or two dashes hot sauce (optional; see note)
The source lists this as an alternative in the same ingredient row.
Source: Savory Cheese Soufflé Recipe