Normal potatoes like these turn brown when they are sliced openFormatoriginal / Alamy The potatoes I am eating are nice, but they don’t stand out taste-wise. To find out what is special about them, you need to cut open the raw tubers and keep an eye on them. What you will see is, er, absolutely nothing – unlike normal potatoes, these gene-edited ones don’t turn brown when cut. That means less waste, because many people and businesses discard discoloured potatoes that are perfectly good to eat. The gene-edited versions I tried aren’t on sale yet, but could be…