"Hot" or "spicy" refers to the sensation of heat experienced when consuming certain foods, primarily due to the presence of compounds like capsaicin found in chili peppers. This heat can vary in intensity, measured on the Scoville scale, which quantifies the spiciness of different peppers and sauces. Spicy foods are popular in many cuisines around the world, including Indian, Mexican, and Thai dishes. The heat can enhance flavors and stimulate appetite, but it may also cause discomfort for some individuals, leading to a burning sensation in the mouth or digestive tract.