Soak noodles in water for about 20minutes till soft and firm.
In a deep bowl combine the noodles, fresh herbs,cucumber, spring onions, garlic, white pepper, salt, sugar and toss well.
Dip 1 rice paper sheet in hot water for 1 second, remove and place it on a worktop.
Lay lettuce leaf on the bottom of the rice paper, add cooked prawn halves and the tossed vegetables (small amount) on top.
Roll up the spring roll about 1/3 way through, then fold in the remaining sides to form a roll.
Make similar rolls in the same fashion.
Lay it on a serving platter without touching each other.
:- Serve with Hoi sin dipping sauce with crushed peanuts!!