This winery’s downtown Napa location is more of a nightclub than a tasting salon, complete with leather couches, a huge vinyl collection, a recording studio in the back, and a small stage for live music near the front window. In short, it’s a great spot to kick back with friends while you sip sparkling wine, chardonnay, rosé, and cabernet. The winery is the brainchild of John and Michele Truchard (their initials form the name), Napa natives who also own the more upscale label John Anthony. Their goal with JaM is simple: to make decent, affordable, and approachable wines that everyone likes to drink. JaM is the leading sponsor of Napa’s BottleRock music festival every year and owns naming rights to the big stage at the old Napa Valley Opera House (which is now the Blue Note Napa). You might even see its Butter-branded bus (dubbed the “Butter Bus,” of course) bopping around town.