The Serrano Pepper is a type of chili pepper that originates from the mountainous regions of Puebla and Hidalgo in Mexico. Slightly smaller than a jalapeño, it ranges from about 1 to 2 inches in size. It has a bright, glossy appearance and can vary in color from green to red, brown, orange, or yellow. Known for its crisp, fresh flavor, the Serrano Pepper is hot; it is significantly hotter than a jalapeño but less spicy than a habanero, scoring between 10,000 and 23,000 Scoville Heat Units on the Scoville Scale. They are frequently used in salsas, sauces, relishes, or marinades and can also be used in stir-frys or pickled for later use. When used in cooking, they add not only heat, but a complex depth of flavor that can enhance a wide variety of dishes.

Serrano Peppers can usually be found in the fresh produce section of a grocery store. They might be with other types of peppers such as jalapenos and bell peppers. If you can't find them there, try the international or Hispanic foods aisle. But availability can vary depending on the store and region.