Prepare the vegetables: Using a food processor, finely mince the carrots, celery, and onions. Be careful not to over-process—avoid extracting too much moisture from the veggies.
Mix the filling: In a bowl, combine the ground pork, minced vegetables, and the seasoning blend. Gently mix until just combined—do not overmix to keep the texture light and juicy.
Wrap the lumpia: Place about 1½ - 2 tablespoons of the filling near the edge of a lumpia wrapper. Roll tightly, folding in the sides as you go. Use the cornstarch slurry to seal the edge. Once wrapped, slice into 3 equal pieces for bite-sized portions.
Fry: Heat oil to 350°F (175°C). Deep-fry the lumpia in batches for 4–5 minutes, or until golden brown and crispy. Do not overcrowd the pan to ensure even frying.
Serve: Drain on a paper towel-lined plate or wire rack. Serve hot with your favorite dipping sauce—banana ketchup, sweet chili sauce, or spiced vinegar.
