In the early 19th century, tobacco was typically fermented at elevated temperatures for up to six months, before becoming snus. Jacob Ljunglöf had a theory: If the tobacco could be used fresh, it would enhance the flavour. He therefore approached his friend, the world-renowned chemist and scientist,
Jacob Berzelius, and asked him for assistance. Together, they invented a new way of producing snus with tobacco, salt water and potash. Rather than taking months to prepare, a batch of snus could now be made in a week. Since then, this has been the predominant method for manufacturing Swedish snus. Realising the value of the new production method, Jacob Fredrik Ljunglöf kept it a secret, writing the formula in a code-format. The recipe itself is heavily relying on the quality of the ingredients as it consists of only premium tobacco, salt and water. ==Knut Ljunglöf, son of Jacob, takes over==