Salt and Pepper Crispy Beef

Name: Salt and Pepper Crispy Beef
Cuisine: Asian, Chinese
Ingredients: 200 g beef (, cut into piece); 1 scallion (, cut into sections); 2 garlic cloves (, shredded); 1 thumb ginger (, shredded ); 1/4 tsp salt; 1 tsp. ground pepper; 1 tsp. chili powder (, optional ); oil for shallow frying; 1/4 tsp. salt; 1 tbsp. light soy sauce; 1/4 tsp. white pepper