Lichen Uses
Lichen are the main winter food for reindeer. In summer they have much more choice of food. Some lichen are eaten by humans. A kind of lichen, which is called 'Iwatake' in Japanese and 'Seogi' in Korean language, is collected from cliffs, and used in various Korean and Japanese foods. Lichen have a high level of acid. Care must be taken, as there are at least two kinds of lichen that are toxic.