This chile, of the species Capsicum annuum, has a very hot and savory flavor. This powder is primarily used in sauces. Scoville heat units are 8,000 to 22,000.ÊSuggested Use: Add the Serrano to any sauce in which an authentic, hot chile flavoring is desired. Ingredients: Dried Serrano Smoked Chiles. Basic Prep: Just add as directed by recipe. Ê Often also spelled Chile, Chilli, Chille.