Spicy Basil Leaf

It sounds like you are referring to a dish that is commonly made with Thai basil, which is also known as spicy basil or holy basil. This type of basil has a distinct flavor and aroma, and is frequently used in dishes from Southeast Asia, including Thailand and Vietnam.

In the United States, you may be able to find Thai basil at Asian markets or well-stocked grocery stores. It has a purple stem and narrow, pointed leaves that are dark green in color. Compared to sweet basil, which is commonly used in Italian cuisine, Thai basil has a more assertive flavor that is slightly spicy and slightly licorice-like.

Thai basil is often used in stir-fries, curries, and soups. One popular Thai dish that features Thai basil is called "pad kra pao," which is made with stir-fried meat (such as chicken, pork, or beef), Thai basil, garlic, chili peppers, and fish sauce. This dish is usually served with rice and a fried egg on top.

To use Thai basil in cooking, you can add it to dishes at the end of cooking, as it does not need to be cooked for a long time. You can also use it as a garnish or in salads. When storing Thai basil, it is best to keep it in the refrigerator, wrapped in a damp paper towel, and placed in a plastic bag. It is best to use it within a few days of purchasing it for the best flavor and aroma.