If you're low on iron, or you don't want to sacrifice two bows to make the refridgerator, there's another way to do this. It's not as cool, and it doesn't hold as much food, but if you're low on materials it works:
- one oak door OR one iron door.
- 1 dispenser.
- 1 stone block.
- 1 lever.
Stick the stone block down first and put the dispenser on top of it. Slap the oak door, (or the iron door,) against the front and put the lever on the side. Bingo: you've got yourself a cooler.