8 ounces shrimp, raw, peeled and deveined – finely chopped
1 pound ground pork
2 tablespoons soy sauce
1 teaspoon salt
0.5 teaspoon black pepper
1 teaspoon sugar
1 large egg – lightly beaten
40 wrappers lumpia
4 cups vegetable oil – for deep-frying
banana ketchup – for serving
Instructions
In a small bowl, whisk the cornstarch and water into a smooth paste; set aside for sealing the rolls.
In a large bowl, combine the ground pork, chopped shrimp, onion, garlic, carrot, scallions, soy sauce, salt, black pepper, sugar, and the lightly beaten egg. Mix with a spoon or clean hands until the mixture turns slightly tacky, 1–2 minutes. Let stand 10 minutes to hydrate.
Separate the lumpia wrappers and cover them with a barely damp towel to prevent drying.
Lay one wrapper on your work surface with a corner facing you. Place about 1 tablespoon of filling 1 inch from the bottom corner and shape it into a thin log.
Fold the bottom corner over the filling, roll once, fold in the sides snugly, then brush the top edge with a little cornstarch paste and roll to seal. Repeat with remaining wrappers and filling, keeping both the unfilled wrappers and rolled lumpia covered.
Heat the vegetable oil in a deep, heavy pot to 350–360°F (175–182°C), with about 2 inches of oil depth.
Fry the lumpia in batches of 8–10, turning occasionally, until deeply golden brown and crisp, 3–5 minutes per batch. Let the oil return to 350°F between batches. Doneness cue: the bubbling will lessen and a test piece cut open shows no pink in the center.
Drain on a wire rack or paper towels for 2 minutes.