2. Because its leaves, stems and flowers have strong fennel flavor, it is also called basil. Basil leaf is a commonly used condiment, because its flowers are in the shape of multi-layer tower, also called nine-layer tower, so it is also called "nine-layer tower"

3. Basil leaves can be used as seasoning for pizza, spaghetti sauce, sausage, soup, tomato juice, shower juice and salad, which is very common in western food, especially with tomatoes.