It has been shown that when temperature and frying time increase the moisture content, density, maximum of force peak decreased while the linear expansion, number of force and acoustic peaks increase and also leading to structures characterized by a high number of small cells. The multiple analytical correlations, presented in this paper, moisture content, bulk density maximum of sound peak, maximum force and mean force of products were negatively correlated with linear expansion, number of sound peaks and number of force peaks. The study strongly supports the idea that the sensation of crispness is a complex of several combined parameters such as fracture characteristics, sound and geometry.