Buying grape juice in San Diego Home › Forums › Winemaking › Buying grape juice in San Diego Tagged: grape juice This topic contains 0 replies, has 1 voice, and was last updated by letoii 4 months, 2 weeks ago. Author Posts October 11, 2017 at 8:18 pm #339 letoiiParticipant Hello all, I’m looking to buy some grape juice maybe 5-10 gallons. Do any of the local San Diego or Temecula wineries sell in such amounts? Is there another place to buy in so-cal? Author Posts You must be logged in to reply to this topic.