Jalapeños are medium-sized chili peppers that belong to the species Capsicum annuum. They are typically green when harvested but can also ripen to a red color. Known for their mild to moderate heat, they usually measure between 2,500 and 8,000 on the Scoville scale, making them a popular choice for adding flavor and spice to various dishes. These peppers are commonly used in Mexican cuisine, often found in salsas, sauces, and as toppings for tacos and nachos. Jalapeños can be enjoyed fresh, pickled, or roasted, and they are also used to make jalapeño poppers, a popular appetizer filled with cheese.