The present invention relates to production method of sweet potato noodles, it includes the following steps: sweet potatoes are cleaned, peeled, ground into paste, filtered using 120 mesh sieve, separating out upper layer yellow powder and water to obtain starch, which is centrifugal to 30-40% water content, add mineral water according to 30-40% water content, stirred and extruded into shape, steamed, cooled in cold storage for 2 hours, then lower temperature to minus 1-30 deg.C. The invented technology does not use alum as coagulant, the obtained noodle is spiral pearl in shape, luminous and transparent in colour and good in mouth feel etc. |