Dark Opal basil (Ocimum basilicum 'Dark Opal') is a striking, bushy herb with dark purple leaves and small, pink flowers.
 
Appearance: 
Upright, bushy plant with small to medium-sized leaves
Leaves are oval-shaped with serrated edges and a crinkled texture
Leaves are dark purple, burgundy, and green, with a faint sheen in sunlight
Stems are dark red to purple, semi-thick, crunchy, and fibrous
Flavor: 
Strong licorice flavor with hints of anise, ginger, cinnamon, clove, and mint
Sweet, savory, and earthy flavor
Uses: 
In salads, pesto, tomato sauce, spaghetti, stews, fish, and vinegars
As a garnish
In summer bouquets