Sitting by the fire on a cold night, wearing a woolly jumper, while drinking mulled wine and stroking a dog - probably surrounded by candles. That's definitely "hygge".
Eating home-made cinnamon pastries. Watching TV under a duvet. Tea served in a china set. Family get-togethers at Christmas. They're all hygge too.
"Hygge could be families and friends getting together for a meal, with the lighting dimmed, or it could be time spent on your own reading a good book," she says. "It works best when there's not too large an empty space around the person or people." The idea is to relax and feel as at-home as possible, forgetting life's worries.
"There isn't so much enforced deprivation in Denmark. Instead you're kinder to yourselves and so each other. Danes don't binge then purge - there's not much yo-yo dieting in Denmark. No wonder they're happier than we are in the UK."