In most cases, the human waste is used on grain crops, which are eventually cooked, minimizing the risk of transmitting water-borne diseases.

在大多数情况下，人类粪便施用于谷物作物上，这些作物最终经过烹煮，从而最大程度地减少了因水传染的疾病的传播风险。

youdao

It has no grain or figs, grapevines or pomegranates. And there is no water to drink!

这地方不好撒种，也没有无花果树，葡萄树，石榴树，又没有水喝！

youdao

Well, it’s flour (the ground down remains of a grain, usually wheat), water, salt and yeast.

嗯，其实就是面粉（来自谷物，通常是小麦），水，盐和酵母。

youdao

The ration of water to grain is approximately 2:1, though I find that as with most grains, one needs to keep checking and potentially add more.

FORBES: The Triumph Of Tofu

The duck drank water and ate grain from people's hands--and naturalistically defecated when finished.

FORBES: Magazine Article

So somehow or another, I mean, this is in fact what happens in one of the Egyptian myths, you end up with some fermented grain sitting in water, and the result is beer.

NPR: Looking at the World Through Beer Glasses