Driven by soil first and foremost, Enfield Wine Co. seeks out vineyards that possess a distinct and powerful sense of place – across region, grape variety, and vine age. Working only with small vineyards and independent growers, every step of the process is guided by the intent to maximize this character of terroir. Grapes are harvested for balance and the wines are all given the chance to ferment naturally. Heron Lake Vineyard is just over the border from Napa County in Solano County. Nonetheless, Heron Lake, on a stony hillside of shallow volcanic soil, produces excellent fruit that dovetails with Mr. Lockwood’s taste for fresh, intense, textured wines that are expressive at low levels of alcohol, generally under 14 percent and frequently under 13 percent.