Before I found AJA Vineyards, I didn’t know a tannin from a terpene. What started as a casual afternoon with a friend turned into a three-hour tasting led by Jenny, one of the staff there, and ended with us signing up for the wine club. The AJA Story AJA Vineyards was founded by Todd and Heather Greenbaum. Their daughter, Amanda Greenbaum — a certified sommelier and author — runs the business day to day. It’s a family operation in the true sense: all three of their kids are involved, and there’s a real commitment to the Malibu Coast AVA, where…