Opal Basil Herb have smooth with defined veining leaves that have serrated edges, creating a crinkled texture, and appear in variegated hues of dark purple, burgundy, and green. Attached to the leaves, there is a four-sided, dark red to purple stem that is semi-thick, crunchy, and fibrous. This herb is aromatic, bearing a spice-forward, clove-like scent, and the leaves have a sweet, savory, and earthy flavor with notes of anise, ginger, cinnamon, clove, and mint.