Question: do serrano peppers have capsaicin?
Answer: The Serrano pepper is said to be about 5 times hotter than the jalapeño pepper. The seeds and membranes of chile peppers contain most of the capsaicin, the compound that lends them their mouth-searing qualities. ... Serrano peppers are extremely hot and range in heat between 5,000 and 20,000 Scoville heat units.