The Serrano pepper is a small, spicy chili pepper commonly used in Mexican cuisine. It is typically bright green, though it can ripen to red, orange, or yellow when left on the plant longer. Serrano peppers are usually about 2–3 inches (5–8 cm) long and have a distinct, crisp texture.
They are known for their moderate to hot heat, ranging from 1,000 to 5,000 Scoville Heat Units (SHU), which makes them spicier than jalapeños but milder than habaneros. The flavor of a Serrano pepper is fresh, bright, and slightly grassy, with a subtle fruity undertone.
Serrano peppers can be used in a variety of dishes, such as salsas, sauces, soups, and as a topping for tacos or other Mexican foods. They can be used both raw and cooked, and are often pickled or roasted for added flavor.