Swiss vinegar maker Baerg Marti Managing Director Stephan Marti poses next to one of the first vinegar barrique barrel stored in a cave on the Mutthorn mountain in the Bernese Oberland August 19, 2009. Baerg Marti is to store a limited quantity of balsamic vinegar barrique barrels in a cave at an altitude of 2900 metres above sea level. According to Baerg Marti, the new investment trend is attracting exclusive investors from all over the world as they are reckoning on an increase in value of 200 to 300% in the first five years. The words on the barrel read "Tadashi Natori", the name of the Japanese industrialist who approached Baerg Marti with the request to purchase a barrel of quality vinegar as an investment and to store it in the Swiss Alps. REUTERS/Christian Hartmann (SWITZERLAND SOCIETY BUSINESS)