RACHEL DE THAMPLE is an award-winning author who has worked in food, health and sustainability for more than 20 years. She teaches fermentation and seasonal nutrition courses at River Cottage in Devon, as well as Petersham Nurseries and Daylesford. She served as Course Director of the College of Naturopathic Medicine's Natural Chef diploma course in London, was the Head of Food for organic retailer Abel & Cole and Commissioning Editor of Waitrose Food Illustrated magazine. She's written seven other books including Tonics & Teas and the River Cottage Fermentation Handbook, which won a Guild of Food Writer's Award and Winter Wellness a finalist for best cookbook. Rachel studied sustainable food systems at University College London and was instrumental in setting up the award-winning Crystal Palace Food Market.