You'll find pork tenderloin in the meat aisle of your grocery store. Typically, a pork tenderloin is a smaller cut, weighing around 1 to 1 1/2 pounds, and often, two tenderloins come packaged together. You might come across some tenderloins that are pre-marinated. However, I recommend skipping these and opting for unseasoned cuts instead. Seasoning the meat yourself allows you to control the amount of salt and oil used, aligning better with your dietary preferences or restrictions.