St. Barbara's Herb is also known as Sweet Basil, Clove Basil, or Lemon Basil. Sweet Basil is the most common synonym for this herb, as its leaves have a slightly sweet, spicy flavor and are commonly used in Italian cuisine, particularly in pesto sauce. Clove Basil gets its name from its fragrance, which is similar to that of clove. This herb is used in Asian cuisine for its anise-like flavor and is often included in stir-fries and soups. Lemon Basil has a citrus-like flavor, making it a popular choice for fish dishes and salads. Other synonyms for St. Barbara's Herb include Thai Basil and Holy Basil, which are variants of this herb used in Southeast Asian and Indian cuisine, respectively.