On a clean and flat surface, gently peel a wrapper at a time from the packet. Be sure you have defrosted the wrappers at least 3-4 hours (in the fridge) in advance so it is a lot easier to peel off individually. If your wrapper is shaped into a square, position it into a diamond with a corner facing towards you so that it is easier to fold. Using no more than a tablespoon (or less), start adding the filling, in thin horizontal formation near the bottom half of the wrapper. Make sure that the soy crumbles are in tact all together and it is not scattered - a scattered mixture can result to a loose and messy fold. Be sure not to overfill the wrapper. Overfilling can remove its crunch after frying. I find the sweet spot to be about ¾ of a tablespoon for a perfect crunch when frying and getting a good amount of "meat" inside the wrapper.Filling, of course, will vary on the size of the lumpia / spring roll wrapper of choice. Brush all edges with flour paste to ensure wrapper secures each fold. And start the fold from the bottom center, overlapping the filling. Press to seal. Be sure fold is sealed and filling is properly secured.
Repeat the process but, now, fold on each side one by one, overlapping each seal almost creating like an open envelope. If the wrapper dries out, brush a little more flour paste.
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Now roll from the bottom work and your way up until it creates a lumpia roll. Be sure the roll is tightly rolled. Repeat the process until filling runs out.
Set aside on a sealed tight container and freeze for later frying. If you wish to fry sooner, allow the rolls to freeze for at least 2 hours before cooking.**
On a cast iron skillet or frying pan, preheat about 2 cups of oil to medium heat. Drop a piece of a lumpia to the skillet; if oil bubbles, it is ready for use.
Fry each lumpia on each side until it is golden brown. Use a strainer or cooling rack to remove excess oil and cool down.
Serve with chili sauce and a side of rice.