Minecraft wiki entry for Superflat_survival, associated text: Wheat can be one of your most valuable resources in superflat. Apart from providing a stable food supply when made into bread, it can be used for breeding, and most importantly trading. Wheat is the best resource to trade with farmer villagers, as it is completely renewable, easy to acquire, and only 20 are needed to trade for an emerald, however not every farmer villager is able to trade for wheat. Through trading, you can acquire virtually anything you need. Wheat, therefore, makes items you trade with villagers renewable.