Preheat the pan over high heat, then add cooking oil.
Add garlic and chili in the pan, lower the heat to medium-high, and stir fry until fragrant.
Add beef ribs and stir fry.
Add soy sauce, sugar, oyster sauce to the pan, turn heat to low, stir till sugar is melted.
Keep stirring until the sauce condenses, then add Thai basil leaves. Turn heat off.
Pad Gra prow is made with a different kind of basil, called holy basil. If you can find it in your local Asian grocery store, by all means, use it! But Thai basil or, as I mentioned, regular Italian basil, can also work for this dish.