Oil-based marinades are the most ubiquitous when it comes to day-to-day preparation of meats. This is because they are ideally suited for preserving or adding moisture during the cooking process, a top priority for most casual chefs. They also promote even distribution of flavor by preventing herbs and spices from settling, and they give meat that scrumptious, glossy sheen. You can keep it simple by adding just and pepper to the oil marinade, or spice it up with minced garlic or fresh herbs.
Olive oil and sesame oil are both great for pork marinades. Each one packs loads of flavor and nutrients, and as little as half a cup is all you need for two hearty tenderloins. Sesame oil is rich in powerful antioxidants and vitamin E. Olive oil is the leader among natural oils for providing monounsaturated fatty acids and helping keep LDL (bad) cholesterol levels down while raising HDL (good) cholesterol.
And thanks to the natural flavor, you can skip popular ingredients such as sugar or molasses that would add unnecessary calories.