A colorless, flammable hydrocarbon gas widely used as a fuel for cooking, heating, and food-processing operations, and as the refrigerant R290 in commercial refrigeration systems. Its clean combustion and portability make it practical for catering, outdoor cooking, and areas without piped gas, while its favorable thermodynamic properties suit modern low-global-warming-potential refrigeration. Safe use demands respect for its flammability: proper ventilation, leak detection, and approved storage are mandatory wherever it is used near food premises. When handled correctly under established safety codes, it is an efficient energy source for the food industry.