typically involves harvesting the peppers , washing them thoroughly , and then slicing , dicing , or living them whole , depending on the desired product . the peppers may then be blanched or lightly cooked to soften them and enhance their flavor . Next , the peppers are packed into cans or jars along with any desired seasoning , such as salt , vinegar , or oil . the cans are sealed to prevent spoilage and then heated to pasteurize the contents , ensuring a long shelf life . Available packages : plastic drums , metallic tins , glass jars , PET jars , plastic pouches.