Dip the spring roll wrappers one at a time in warm water and place on a damp tea towl to drain. Allow to dry off slightly.
Mix the vegetables with the fish sauce, vinegar, sugar and a handful of fresh mint leaves.
Place a mint leaf in the center of each wrapper, add the vegetable filling and roll up, folding the side closest to you over first. Then pull the sides together like an envelope and then roll the parcel away from you until a neat rill is formed. It should be translucent in appearance. Serve sprinkled with fresh herbs, accompanied with Blue Dragon Nuoc Cham.
Add sliced cooked shrimp for a more substantial dish.