Dolok Sanggul is a city within the coffee growing area we refer to as Lintong. Lintong Nihota is the town that has become synonymous with the entire southern part of the Lake Toba area and most of the coffee from the southern shores is sold as such. Lake Toba defines the landscape of the area, the largest volcanic crater lake in the world, and the result of the largest volcanic event on earth in the last 25 million years! It is huge, and the coffees from the north and eastern shores are quite different from the Lintong coffees. Dolok Sanggul is a local marketplace for coffees from the area; once a week the farmers gather to sell their parchment coffee to trusted vendors, who "collect" it on behalf of specific mills, or as freelancers. The mill we work with has certain farmers from higher altiitude areas, and who produce a very clean, high-quality parchment coffee. That's part of the reason this has great cup character ... the other is special milling and sorting practices. We offer the top grade, specially- prepared Lintong coffees as Blue Batak in honor of the Toba Batak people. Blue Batak is a near-zero defect preparation, without the usual split beans, broken pieces and crud found in standard Sumatras. It is carefully density sorted and triple-hand-sorted. And since my latest obsession is inspecting coffee under ultraviolet light while grading them, this lot still shows the normal wet-hulled issues, but is infinitely better than so-called Grade 1 Mandhelings and the like.