Rewind: Helen McGinn on what her supermarket wine guide is all about

“I’m asked for wine recommendations every single day. When the idea of this book came along, I knew I had to do it.” That’s how Helen McGinn describes her new book - The Supermarket Wine Guide - that promises to be a definitive guide for the best quality and value wines up to £20 available on a UK high street. Buying wines is how she first made her way in wine, as a wine buyer for Tesco - she's now about to start selling her new guide book in its stores. It marks the latest step in a what is now a successful broadcast and writing career - it all started with The Knackered Mother’s Wine Guide way back in 2013. Here she explains what you can expect from her supermarket wine guide when it is published this week on May 21 .