What is filled inside Lumpia?

Lumpia is a Filipino spring roll that is filled with a variety of ingredients, including ground meat, vegetables, and noodles. The most common type of lumpia is the Shanghai lumpia, which is filled with ground pork, carrots, onions, and celery. Other popular fillings include shrimp, chicken, and tofu. Lumpia is typically served with a sweet and sour dipping sauce.