system
A chat on subreddit /r/me_irl
human
The real problem with environmental campaigns like this is they rely on you not knowing any additional information. 381 gallons for a pound of cheese vs 299 for a pound of rice, or 290 gallons for a pound of oatmeal. It takes 704 gallons to make a pound of lentils and 501 gallons to make a pound of chickpeas. 

They are definitely not going to mention it takes 872 gallons of water to make a single gallon of wine. 

Of nut varieties, none require less than a thousand gallons per pound. 

As for oils, everything beats olive oil, which requires a whopping 1729 gallons of water to produce one pound of oil. 

A pound of chocolate requires 2061 gallons of water to produce. For a pound of vanilla beans it requires 15,159.

The key takeaway from the study that came up with these numbers is that it requires a huge amount of water to produce the foods we eat. Far more than people realize. 

Globally 92% of fresh water is used in agriculture, only 30% of which is used to raise meat and dairy products.
gpt
Awesome data!