There are a variety of synonyms for dark opal basil, including purple basil, red basil, and burgundy basil. This herb is known for its striking and unique coloring, making it a popular addition to gardens and kitchens alike. Its deep hue makes it a beautiful accent in salads and as a garnish, while its flavor is similar to regular basil with a slightly stronger taste. Whether you call it dark opal, purple, red, or burgundy basil, this herb is a must-have for any avid gardener or chef looking to add some color and flavor to their dishes.