Some of the foods eaten by prehistoric people may seem very odd to us today. The stalks from a spikey Agave plant (top, left) were cooked for a sweet-tasting and nutritious food. At the top right, a young child tastes a strip of buffalo jerkey. At bottom left is a mash of cooked bulbs from another sharp-leaved plant, the lechuguilla. After cooking, cholla cactus (shown sliced, at bottom, right), still may not taste good, being rather sour.