- Fill a round dish (I like to use a 10-inch cake pan) with warm-to-hot water, about 160ºF. 
- Dip one of the spring roll wrappers in the warm water for a couple seconds, shake off the excess water, then lay flat on a cutting board. 
- Place a leaf of lettuce on the bottom third of the rice paper. On top of the lettuce, add a couple slices of cucumber, a few strips of jalapeño, about a 1/2 cup of soba noodles, a few leaves of Thai basil, and a generous sprinkle of green onions. 
- Begin to roll the rice paper wrapper from the bottom to the top, folding it over the ingredients. Tuck in the sides and continue to roll, just as you would a burrito. Set on a platter and repeat the process with the remaining ingredients. 
- For a pretty presentation, slice rolls diagonally before serving.