Listened to a news story at some point over the last couple years, as there were lettuce shortages in North America due to the drought in the US Southwest, and

Listened to a news story at some point over the last couple years, as there were lettuce shortages in North America due to the drought in the US Southwest, and one quote stayed in my mind: "Lettuce is perhaps the most expensive way to transport refrigerated water from farm to table." Iceberg lettuce is the worst, as it has almost no nutritional value.