Mix ground beef with the marinating ingredients well in a large bowl. Set aside to rest for around 15 minutes.
Prepare all the other side ingredients during this process.
Heat up around 2 tablespoons of cooking oil in a deep pan or wok; add ground pork to fry until the peek color disappears. And break them into smaller particles during the process. Transfer out and leave the oil.
Add garlic, red onion to fry until aroma. And add red peppers and green peppers to fry for around 1 or 2 minutes. Longer cooking time can reduce the spiciness of the final dish.
Return fried ground beef again. Add soy sauce, salt and black vinegar. Fry for around 1 or 2 minutes.
To serve, pour the ground chili beef on your freshly steamed rice. And serve hot!