Combine potato flesh with butter and green onion; stir until butter is melted evenly into potato. Add salt, black pepper, cayenne pepper, and cheese; stir until cheese is melted. Pour cream and egg yolk into potato mixture; mix to combine. Season with salt to taste.
Source: tatoeba (3574402)
The chef prepared a spicy sauce for the tacos, adding jalapeños and cayenne pepper for a fiery kick.
Source: tatoeba (11563117)
This is cayenne pepper.
Source: tatoeba (12103697)
What's the difference between a cayenne and a jalapeno?