From the L.A. Times: When the woolly mammoth ran out, early man turned to roasted vegetables.
Long before early humans in North America grew corn and beans, they were harvesting and cooking the bulbs of lilies, wild onions and other plants, roasting them for days over hot rocks, according to a Texas archaeologist.
The evidence for this practice has long been known of in fire-cracked rock piles found throughout the continent, but archaeologists have tended to ignore it "because a new pyramid or a Clovis arrow point is much sexier," said archaeologist Alston V. Thoms of Texas A&M University. [continue]
Much lower in protein and fat than meat. Must have meant near starvation at times.