Serrano pepper has 32 kcal per 100 g. About five times hotter than jalapeno. Used in pico de gallo and Thai dishes. Small, so calorie tracking is rarely necessary.
How should I track Peppers, serrano?
Peppers, serrano is a good source of fiber. For consistent tracking of Peppers, serrano, weigh it raw. Cooking method changes both weight and calorie density — steaming barely changes anything, but roasting with oil or frying can double the calories. A systematic review (Whitton et al., Adv Nutr 2022) found vegetables are omitted from food logs 2–85% of the time, often because people assume they are "free" calorically. While most vegetables are indeed low-calorie, the fats added during cooking are not. Log the oil, butter, or dressing separately to keep your tracking accurate.