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“They may also ask that you bring certain types of food, alcohol, or tobacco on a regular basis. It must be noted that although djinn in their natural state might be composed of plasma, most of them can take a physical shape for short periods of time. This means that a djinni is able to take in nourishment by absorbing energy or consuming food. It's thought that many djinn enjoy the "taste" of a variety of our everyday foods, especially ice cream and fruits. Human foods only partially provide subsistence, however: djinn must get most of their nourishment by absorbing various types of energy from living things.” — Rosemary Ellen Guiley
They may also ask that you bring certain types of food, alcohol, or tobacco on a regular basis. It must be noted that although djinn in their natural state might be composed of plasma, most of them can take a physical shape for short periods of time. This means that a djinni is able to take in nourishment by absorbing energy or consuming food. It's thought that many djinn enjoy the "taste" of a variety of our everyday foods, especially ice cream and fruits. Human foods only partially provide subsistence, however: djinn must get most of their nourishment by absorbing various types of energy from living things.