"Indigo" by Jenny Balfour-Paul is a hardcover book published by British Museum Press, focusing on the topics of textiles, polymers, and dye. The book delves into the world of technology and engineering in the realm of crafts and hobbies, with a detailed exploration of the use of indigo in various applications. Illustrated by the author herself, this book provides valuable insights for those interested in the intricacies of dyeing and textile crafts, offering a comprehensive look at the world of indigo through a blend of English language and expert knowledge.