Zelazny's Arcane Create Food and Water

You create food, water, or both within range, on the ground or in containers, up to a total volume of 1 cubic foot for every 3 caster levels you have (minimum 1 cubic foot).

Each cubic foot of food sustains three Medium or smaller creatures, or one Large creature, for one day. The food is bland but nourishing, and it dissolves into an inedible mush if not consumed within 24 hours.

Water created by this spell is clean and permanent — it lasts until consumed, spilled, or otherwise lost.