A modular refrigeration system comprising one or more structural components configured to store food, wherein the one or more structural components comprise: an internal compartment configured to store the food; an outer vessel configured to hold the inner compartment; and a cavity formed by the internal compartment and the outer vessel and configured to hold an absorbent material, wherein the outer vessel, the internal compartment, and the absorbent material maintain the food in the internal compartment within a first predetermined temperature range.