The Chinese use these dough squares to make deep-fried egg rolls. While assembling the egg rolls, keep the stack of wrappers moist by covering them with a damp towel. You can seal the rolls with a "glue" made with cornstarch and water. Look for fresh wrappers in Asian markets and many supermarkets. Store them in the refrigerator or freezer, but let them come to room temperature before using. Rice paper (larger and thinner than egg roll wrappers; yields a crispier roll) or phyllo (for baked rather than fried eggrolls) or pasta sheet may be substituted.