Balsamic vinaigrette is a tangy and slightly sweet salad dressing made primarily from balsamic vinegar and olive oil. It's typically seasoned with various ingredients like Dijon mustard, garlic, salt, pepper, and sometimes honey or maple syrup for added sweetness. The combination of these ingredients results in a balanced, flavorful dressing that pairs well with a variety of salads and vegetables. Its rich, dark color and robust taste come from the balsamic vinegar, which is known for its deep, complex flavor profile.