How to turn one potato into 20 potatoes. For free

Last Spring, Reddit user Defender90 found a sprouted potato at the end of the bag of spuds and decided to plant it. The resulting yield, a photo of which has gone viral, has us seriously considering starting a vegetable patch of our own. "I read some instructions on the internet and buried it under a little soil." writes the grower. "As the plant grew, I added soil around the stalk but not as much as I could have. This was maybe 4-5 pounds of potatoes from one stupid throw-away starter." Fancy having a go yourself? Download this handy fact sheet from Teagasc before getting started.