- Mix together the flour and salt with clean fingers on your work surface. 
- Create a well in the center of the flour and add the egg, whisking slowly to incorporate the flour. 
- Add the water a little at a time and work the dough until it holds together and forms a ball. 
- Using your hands, knead the dough for 5-6 minutes to develop the gluten. 
- Cover the dough and let it rest for 30 minutes. 
- After 30 minutes, knead the dough again for 2 minutes. 
- If you have a pasta roller, pass the dough through the pasta machine on its thinnest setting. (If you don't have a pasta machine, roll the dough into a long rope and cut the rope into 40-50 small pieces. Use a dough roller to roll each piece into 4-inch circles.) 
- After thinning the dough through the pasta roller, cut the dough sheets into 4-inch circles, or about the size of the wide mouth of a mason jar. (You could also cut them into rectangles.) 
- To keep the wonton wrappers from sticking together, dust them each with flour and stack them in a pile, wrapping the pile in plastic wrap. Freeze until ready to use. 
- To thaw the wrappers, take them out of the freezer and place them in the refrigerator for 2-3 hours.