This simple, no-oil balsamic dressing is the perfect marinade for mushrooms prior to grilling. Also use as a delicious dressing over cooked potatoes with fresh basil and sliced roasted peppers. Make a day in advance to allow the flavors to come together.
(Tip: use a jar with a lid to make the dressing by combining everything in the jar, fastening the lid and vigorously shaking to create an emulsion).