Soak the dried shrimps in water for 2 hours. Then, chop into smaller pieces and stir-fry with some cooking oil. Skip this step if you use tiny shrimp crips (tép khô sấy).
Peel and julienne jicama, and carrots. Sauté the vegetables with a little water and season with 1/2 tsp salt until they are cooked but still retain a slight crunch.
Steam-fry Chinese sausages. Slice Chinese sausages on an angle (about 45 degrees).
Beat the eggs with a pinch of salt, pepper, and optionally diluted cornstarch. Make a thin omelette crepe in a non-stick pan over medium heat. Roll it up and slice into ribbons.
Dip the rice paper in water for 5 seconds. Lay it on a place with the smooth side facing down. Add jicama (kohlrabi, or daikon) and carrot to the bottom third of the rice paper, then top with fried egg strips.
Place the Chinese sausages at the opposite end of the rice paper. Sprinkle dried shrimps on the centre of the rice paper with some herbs.
Roll the rice paper tightly to seal the filling, and be sure to evenly push in the veggies throughout the roll for a consistent tightness.
Enjoy with Vietnamese Peanut Sauce and a drizzle of chili oil.