Heat vegetable oil in a large pan over medium heat.
Add ground meat to the pan and cook, breaking it up with a spoon, until fully cooked and browned. Drain any excess fat if necessary.
Add chopped red onion, minced garlic, and minced ginger to the pan. Cook for another 2-3 minutes until the onion is translucent and fragrant.
Stir in fish sauce, lime juice, and sugar (if using). Adjust the seasoning to taste.
If using, add toasted rice powder to the mixture for added flavor and texture.
Stir in sliced red chilies according to your preferred spice level.
Add chopped mint leaves, cilantro, and green onions to the mixture. Stir well to combine.
Arrange lettuce or cabbage leaves on a serving platter.
Enjoy your meal!