Steps
1. Prepare the filling: Heat a little oil in a pan, sauté minced shallot and garlic until fragrant.
2. Add minced pork and chopped shrimp, season with fish sauce, sugar, salt, and pepper. Cook until fully cooked and set aside.
3. In a bowl, mix tapioca starch and rice flour with enough water to form a smooth, thick batter.
4. Cut banana leaves into 15x15 cm squares, soften by passing over a flame or steaming briefly.
5. Place a spoonful of batter onto the banana leaf, add a spoonful of filling in the center, then cover with another spoonful of batter.
6. Fold the banana leaf to seal the cake into a small parcel.
7. Steam the wrapped cakes for about 20 minutes until the batter becomes translucent and chewy.
8. Serve warm, optionally with a side of dipping sauce.