Wrap the Egg Rolls: Fold in the sides of the egg roll wrapper and roll it up tightly, sealing the edges with the egg wash.
Heat oil in a frying pan or deep fryer to 375°F.
Carefully place the egg rolls in the hot oil and fry for 3-4 minutes, turning as needed, until golden brown and crispy.
Make the Dipping Sauce: In a small bowl, combine chopped cilantro, green onions, onion, and hot sauce (optional) for a zesty dipping sauce.
Serve: Remove egg rolls from oil and place them on paper towels to drain. Serve with the dipping sauce.