According to a report by Access Hollywood, Nigella Lawson celebrated the twenty year anniversary of her first cookbook, 'How To Eat,' however the celebrity chef said that the memory is actually bittersweet. Nigella wrote on Twitter, "This time 20 years ago, I was at the launch party for my first book, How To Eat. Looking at this photo makes me happy, but also very sad. I wish I could be in John’s arms now.