Basil is one of the world’s most beloved culinary herbs, yet it often leaves food lovers a little confused. Why? Because basil isn’t just one plant—it’s a whole family of over 160 different basil varieties, each with its own unique taste, shape, and color. From Thai basil to Greek basil, Napolitano basil, lemon basil, cinnamon basil, and even the striking purple basil, this herb is full of diversity. There’s even a giant variety called Mammoth basil, with leaves so large they’re sometimes mistaken for lettuce.
Where Does Basil Come From?
Basil originally comes from South Asia, but today it has spread across the world and is a staple in both Asian and European cuisine. In Italy, basil is a star ingredient in pesto, pasta sauces, and classic dishes like Caprese salad (fresh tomato, mozzarella, and basil). In France, it flavors Provençal soups, while in Southeast Asia it’s essential for curries, soups, and stir-fries.
Interestingly, the word basil is derived from the Greek basileus, meaning king. Some suggest it was once used as a royal medicine or bath ingredient, which explains why basil is often called the “king’s herb.”
Popular Types of Basil
1. Sweet Basil (European Basil)
The most common basil in Europe and North America. Its bright green oval leaves and peppery flavor make it perfect for pasta, pesto, and fresh salads.
2. Purple Basil
Recognizable by its deep red-purple leaves, this variety has a slightly spicier, clove-like taste. It’s often used for visual appeal as well as flavor.
3. Thai Basil
Widely used in Thailand, Vietnam, Cambodia, Taiwan, and Laos, Thai basil has a sweet, anise-like flavor with hints of nuts. The leaves are dark green, sometimes purple-tinged, and sturdier than European basil. Its strong aroma and refined taste make it a favorite for Thai curries, soups, and wok dishes.
4. Holy Basil (Tulsi / Krapao)
Another important basil variety in Asia, holy basil is more peppery and spicy compared to Thai basil. It has oval leaves and is essential in Thai dishes such as Pad Krapao (stir-fried chicken with holy basil).
Many people confuse Thai basil with holy basil—especially since both are sometimes called “Thai holy basil.”
To keep it simple:
Thai basil = sweet, anise flavor, elongated leaves.
Holy basil = spicy, peppery, oval leaves.
Basil in Asian Cuisine
Thailand: Thai basil is often used in curries, while holy basil is the star of stir-fries and omelets.
Vietnam: Thai basil is served as a fresh garnish for pho and other noodle dishes.
Cambodia, Laos, Taiwan: Basil is a common herb in soups, broths, and street-food favorites.
How to Use Basil in Your Cooking
There are no strict rules when it comes to cooking with basil. While Italians might insist on sweet basil for pesto, and Thais might recommend holy basil for krapao, the best choice is the basil you personally enjoy. Experiment with different types of basil to discover unique flavors:
Use Thai basil for a fragrant twist in soups and curries.
Add sweet basil to pasta, sauces, or salads.
Try purple basil for color and a hint of spice in salads.
Cook with holy basil for authentic Thai stir-fries.
Final Thoughts
Basil truly lives up to its royal name—the king of herbs. Whether you’re tossing it into a Mediterranean pasta, flavoring a Thai curry, or sprinkling it over pho, basil adds a burst of aroma and freshness that elevates any dish. With so many varieties to explore, basil offers a world of flavors waiting to be discovered.