Thermflo is a modified food starch derived from waxy maize. It is an extremely versatile product that is especially applicable in high and low pH food systems where exceptional tolerance to heat and shear is required. Comes in a bulk 2.5 lb. resealable bag for your convenience. Thermflo is a modified food starch derived from waxy maize. It is an extremely versatile product that is especially applicable in high and low pH food systems where exceptional tolerance to heat and shear is required. Thermflo modified corn starch contributes a smooth, short texture and heavy body to both high and low pH food systems that are processed under conditions of high temperature, lengthy processing or high shear. Products made with Therm Flo modified food starch exhibit exceptional stability when subjected to various processing conditions. Thermflo modified starch is suited for many food systems including retorted foods, aseptically canned foods, and frozen foods.