Which term describes a situation that is never ending or changing?

The term that best describes a situation that is never ending or changing is "perpetual." This word indicates something that is continuous and ongoing, without any interruption or end. In the context of culinary and food services, this can refer to processes or conditions that remain the same over time, such as certain cooking methods or traditions that do not evolve.

While "static," "eternal," and "constant" may seem similar, they encompass slightly different nuances. "Static" often refers to something that is stationary or unchanging, but it may imply an inability to adapt as well. "Eternal" suggests a sense of timelessness or infinite duration but may carry a connotation of philosophical or spiritual permanence rather than practical continuity. "Constant" refers to something that remains consistent or uniform without variation, but it does not necessarily imply a never-ending nature.

Thus, "perpetual" is the most fitting term for describing a situation that is both never ending and unchanging.