So let's start at the beginning...
If I may dork out for a minute, let me clarify why the grapes from this mountain (and other mountains) are so unique.
If we think about mountains for a minute ('cause I know that's what you want to do in your free time), these areas are on sharp slopes, at altitude, and, importantly in Napa, above the fog line. This means they get sun hitting the grapes at an angle rather than beating down directly (less harsh light), they benefit from cool breezes higher in the atmosphere, and they get about 2 more hours of light than the vineyards in the Napa Valley, which are blanketed in fog in the early AM and late PM.
In general, mountainsides are cooler and have less dramatic temperature swings so the grapes ripen more consistently. These conditions are awesome for vineyards, because grapes can develop fruit flavor over time, but they won't generally get baked and lose their acid, tannin, or get too high in sugar, therefore alcohol (fermentation turns sugar to alcohol, BTW).
Ok, dork out done...back to Ladera.
For starters, Ladera farms about 85 acres on this mountain. That's 12% of total production, the most of any producer. He jokingly called them the "tallest midget on the mountain." The Winery has changed hands many times over the years and gone by various names. It was actually started by some guys from Bordeaux in 1886, who sought to grow great mountain fruit in Napa.
The Winery makes 12,000 cases a year and most of it is sold to wine club members and in restaurants. You have to make an appointment to visit, but the view is magnificent and I bet the new tasting room they have planned for next year will be awesome. The grounds are gorgeous and these people have an incredible aesthetic. Although my tour guide was very corporate in manner and projected a bit of disdain for the whole Wine For Normal People thing (sorry to him, but I gotta be honest), I still had a great time and the wines were good.
Taste: The wine tasted like it was grown in a cooler climate. What does that mean? It wasn't all baked fruit and pie flavors. Although bolder than the Napa wine, this was still pretty restrained. It was earthy and had great mouth drying tannin and good mouthwatering acidity.
Drink or Sink? Drink. A very balanced wine -- again, I think this would be better with food than it was alone.