In the many years of developing the production technology of birch sap, Susanna and Arto Maaranen have gathered a great deal of information on birch, birch sap and how to collect it, and they have received a lot of feedback on the believed health benefits of birch sap.
Based on these experiences they have written a book called "Birch sap - a toast to nature and health" ("Koivun-mahla - malja luonnolle ja terveydelle"), published in April 2003. The book is a basic information package about birch, birch sap and collecting it for use at home. Ask about the book in the book-stores. The stores can order the book from the publisher.
The publisher's contact information:
ART HOUSE OY
Bulevardi 19 C, 00120 Helsinki
puh. 0800-12500, Fax (09) 693 3762
www.arthouse.fi