What people don't always know is that dandelions are edible. Dandelions are also hard to get rid of, since they can grow 15-foot roots and produce 5,000 seeds a year.
The food in question is dandelion greens. Yes, that's right, the plant that makes your lawn look a mess and which grows in cracks in pavements and driveways, on green verges and in roadside hedgerows.