Combine ground beef, firm tofu, chopped green onion, finely chopped onion, egg, white pepper powder, soy sauce, sesame oil, potato starch, and all-purpose flour in a bowl.
Mix well until all ingredients are thoroughly combined.
Heat about 2 tbsp of cooking oil in a pan over medium heat.
Form the mixture into small patties or fritters.
Carefully place the fritters into the hot pan.
Pan-fry the fritters for several minutes on each side until they are golden brown and cooked through.
Serve fresh off the pan.
