''This book is a much-needed, unique and very practical guide to how you can use the new knowledge of the gut microbes to improve your health as well as developing and expanding your skills in the kitchen.'' Tim Spector ''It is impossible to read this book without wanting to scuttle off into the kitchen.'' Nigella Lawson Foreword by Tim SpectorThe benefits of sourdough are well known - the slow fermentation process creates a healthier and lighter dough that is easier to digest - but until now they have been mainly linked to breadIf it rises, however, it can be made with sourdough, and in this ground-breaking new book, Vanessa Kimbell focuses on sweet sourdough bakes that not only nourish the gut but also improve your mood. Using a variety of flours, including chestnut, spelt and einkorn, as well as blends you can make up yourself, the classic recipes and new ideas for flavour combinations cover everything from cakes, tarts and biscuits, to doughnuts, brioche and pretzels, and rely on n