When selecting winemaking equipment, make sure to get a hydrometer test jar. Find out more about hydrometer test jars withexpert tips from a wine maker in this free video about how to make wine. Expert: John Brack Contact: www.AustinHomebrew.com Bio: John Brack has been brewing his own beer and wine for more than 15 years, and has been on-staff with Homebrew Supply for more than 11 years. Filmmaker: MAKE | MEDIA