Abstract: The present invention provides an adjustable container for instant food, the adjustable container comprising: a floor; a peripheral wall extending upwardly from the floor, terminating at an upper opening, and defining interior volume, the peripheral wall having a first unfoldable part formed along at least two first fold lines, a sheet-type lid covering the upper opening, and wherein the adjustable container has at least two states: a first state that the first unfoldable part is folded and the adjustable container has a first interior volume, and a second state that the first unfoldable part is unfolded and the adjustable container has a second interior volume larger than the first interior volume.