Mint basil, also known as Thai basil or sweet basil, is a herb that combines the flavors of mint and basil. It is widely used in Southeast Asian cuisines, particularly in Thai, Vietnamese, and Indonesian dishes.

The leaves of mint basil are similar to those of regular basil but have a slightly different taste and aroma. They are often described as having a sweet, licorice-like flavor with hints of mint. Mint basil leaves are typically used fresh and added towards the end of cooking to preserve their delicate flavor.

Mint basil can be used in a variety of dishes, including stir-fries, curries, soups, salads, and even desserts. It pairs well with ingredients like garlic, ginger, chili, coconut milk, lime, and fish sauce. Some popular dishes that feature mint basil include Thai basil chicken (Pad Krapow Gai), Vietnamese pho, and Indonesian nasi goreng.

When using mint basil, it's best to tear or chop the leaves just before adding them to your dish to release their aromatic oils. You can also use the stems, although they tend to be more fibrous and are often removed before serving.

Overall, mint basil adds a unique and refreshing flavor to dishes, combining the best of both mint and basil. Its distinct taste makes it a popular choice in many Southeast Asian recipes.