ABSTRACTThis investigation aims to develop a device that meets the specific requirements of energy‐intensive household cooking tasks, such as the nixtamalization process. In particular, a pot‐type biomass stove is designed and built. A computer‐aided design (CAD) model of the stove was created, followed by a metal prototype. Thermal performance was evaluated by means of numerical simulations as well as experimental thermographic images. The numerical and experimental results were compared, and the quantitative correlation was found to be in good agreement. The results show that this stove can handle energy‐intensive cooking tasks like nixtamalization of maize. The development of this stove resulted in significant improvements in thermal efficiency and fuel consumption when compared to conventional stoves.