Frying was carried out in an electrically heated fryer (model PFE8, IME, Austria), which was thermostatically controlled to maintain the set frying temperature ±2 °C using an electrical control system. Oil was warmed up 20 min and unpuffed cassava crackers were deep-fried. A 32 full factorial design was used with three levels of temperature (140, 150 and 160 °C) and three levels of time (10, 20, and 30 s). A total of nine treatments of cassava crackers were fried, each were prepared in duplicate (two experimental replications).The fried samples were kept in plastic bags after the temperature of the samples decrease to room temperature, which was the case within 1 h after frying.