Bay leaf is a fragrant and flavorful herb that is commonly used in cooking to add depth and complexity to dishes. It is harvested from the bay laurel tree and has a slightly bitter taste with a woody aroma. Bay leaf is often used in soups, stews, sauces, and marinades, and is a key ingredient in many Mediterranean and Middle Eastern dishes. It is also a popular spice in Indian cuisine and is used in dishes like biryani and curry.