Even though this is a salad dressing, it is also a fine marinade for various types of meats. The interesting thing about a basic dressing is that it can have a number of variations (just like Béchamel sauce). For example, you can add a minced clove of garlic and have a garlic dressing. Or you can add a bit of dry mustard, celery seed, and oregano and have a zesty herb dressing. Just use your imagination.
Be sure to use your favorite vinegar, whether wine or plain cider, and your favorite oil.