Measure all ingredients into a jar with a tight-fitting lid. Shake vigorously until well-blended and emulsified. Taste and adjust seasonings, adding more salt and pepper if necessary. (Alternatively, you may whisk ingredients together in a bowl, process ingredients in a mini food processor, or blend them in a blender.) Store leftovers in a sealed container in the refrigerator; allow to come to room temperature and shake well before using.