Chef Emma Macdonald discusses and provides recipes for canning and preserving food. Sustainable, low-waste and delectable, preserved food is indispensable to any modern kitchen. Macdonald and Tee show you how to make the most of any hedgerow-foraged bounty, allotment gluts or leftovers. They cover time-honoured concoctions, as well as some modern combinations that will make your gift of homemade jam or chutney gratefully received. -- adapted from...