Make the sauce by stirring together all the ingredients. Taste and adjust seasoning.
Fill a flat plate with water. Lightly dip a sheet of rice paper and place it on a flat surface in front of you. Dip the second sheet and lay it on top of the first.
Lay out a little of each of the vegetables, tofu, and herbs in the centre. Fold the sides, then roll into a log, keeping it as tight as you can.
Halve the rolls and place them on a tray with gaps between each roll (they tend to stick to each other when they’re still wet).
Serve with the dipping sauce.