From the L.A. Times website, after critiquing their modern cactus photo yesterday, I happened upon this Blue Agave photo and article.
At the Stanford Avalon community garden in Los Angeles, Norma Garcia picked up a blue agave leaf nearly 3 feet long that she planned to roast on a dry, hot griddle. Once she had burned the outside, she would juice the flesh, getting about 2 cups of liquid from the leaf.
This paragraph may be taken out of context from the whole article, but it kind of does that by itself anyway, so the mystery of the paragraph is real. Click through and check it out yourself.