How to use the valve that keeps oxygen out when making your own wine; learn more about wine in this free instructional video.
Expert: Kálmán Zsolt
Contact: gundel.hu/bor/
Bio: Kálmán Zsolt is president of the Hungarian Sommelier Association. He has been responsible for wine production at the wineries of Gundel, a famous Hungarian restaurant, since 1998.
Filmmaker: Paul Volniansky
Duration : 0:1:23