Serrano peppers are small to medium chili peppers with a fiery heat and sharp flavor.
An extremely versatile and widely used chili pepper, serranos are similar in appearance to jalapeños, but they are smaller, more slender and pointed, and quite a bit spicier.
Serrano peppers are green when unripe, which is when they are usually used. Serranos are generally eaten raw, sliced into rounds or minced for use in salsas or sauces, added to guacamole, or used as a garnish.
Serrano chilis will turn red, orange or yellow as they ripen, and some of them will turn a chocolate brown color.
It is said that serrano chilis have a "delayed fuse," which means that their heat takes a moment to fully kick in when it hits the palate. Serrano peppers register between 10,000 and 25,000 Scoville heat units on the Scoville Scale.
To add a kick to your basic cornbread recipe, try adding two thinly sliced serrano chilis to the batter, then bake as usual.