Why is Yemen Mocha Coffee Expensive_Yemen Mocha Coffee Flavor Characteristics Introduction

Professional coffee knowledge exchange. For more coffee bean information, follow Coffee Workshop (WeChat public account: cafe_style).

What does Sumatra coffee taste like? A guide to Lake Toba and Lintong Mandheling

[100g Small Pack] Indonesian Sumatra Mandheling, Dark Roast Premium Coffee Beans

Lake Toba sits in the Dapato highlands of northern Sumatra, Indonesia. It is the country's largest freshwater lake and a world-famous plateau lake and tourist destination. Lake Toba was formed by faulting and reaches a maximum depth of 505 meters, at an elevation of 905 meters. The lake is diamond-shaped, roughly 100 kilometers long and 30 kilometers wide, with an area of 1,130 square kilometers, making it the world's largest volcanic lake. Coffee in North Sumatra province is grown around Lake Toba, and the lake's hinterland is enormous. The best-known production area is Lintong, south of the lake. Lintong is a small town near Lake Toba, and because the lake's surrounding terrain is so vast, coffee quality varies noticeably from north to east. This particular coffee is the highest-grade Mandheling from the Lintong production area.

Indonesian coffee quality is highly varied, and most of it is marketed by island of origin -- Sumatra, Sulawesi, Java, or Timor. The strength of Indonesian coffee is that most varieties offer rich, restrained flavors and lively, moderate acidity. Chinese drinkers hold Indonesian Mandheling coffee in extremely high regard, making it one of the most widely accepted single-origin products. Indonesian Mandheling was once praised as the world's finest unique wet-hulled coffee bean, and Mandheling is a trademarked product. Today, as long as coffee cherries harvested in Indonesia go through this distinctive wet-hulling process, the resulting green beans are sold under the Mandheling name. Mandheling takes its name from coffee planted by the Mandailing people in the Tapanuli region of northwestern Sumatra. At the end of World War II, a Japanese soldier introduced it to the Japanese market, and because of a mispronunciation, Mandailing became Mandheling.

Sumatra Island coffee is complex and elusive. The best coffee from Sumatra comes from two places: Aceh province in the north, near Lake Tawar, and the mountains around Lake Toba further south. Because production is dominated by small tenant farmers, and because of their distinctive semi-washed processing method and the soil's iron deficiency, coffee from this area shows a special blue color at the fresh green-bean stage. Sumatra is Indonesia's second-largest island and the world's sixth-largest, covering 470,000 square kilometers -- thirteen times the size of Taiwan. It is divided into eight provinces, but only two grow coffee extensively: Aceh and North Sumatra. The most representative production areas in these two provinces are the Gayo Mountains around Lake Tawar in Aceh, planted by the indigenous Gayo people, whose coffee culture is notably dominated by women in both cultivation and harvest.

Lintong's Blue Lake Batak is a famous volcanic lake less than two hours' drive from Medan, the largest city in North Sumatra. It is the world's largest volcanic lake, with a vast hinterland, so the style of coffee varies greatly from the north to the east. This particular Blue Batak is the highest-grade Mandheling from the Lintong production area. Today it is the Batak people, not the Mandailing, who grow coffee in the mountains near Lake Toba. The name "Blue" comes from the slightly blue-green appearance of the green beans and the clear azure color of the lake surface, hence Blue Lake (Blue Batak) Mandheling, or Blue-Eyed Mandheling. Under this semi-wet, semi-dry wet-hulling method, farmers use machines to remove the skin and pulp of the red cherries. The beans still carry plenty of mucilage, so they are stored in fermentation tanks and stirred for about one day (24 hours). When fermentation is complete, the remaining mucilage washes off easily with water. The beans are then sun-dried to about 30% to 35% moisture content, the parchment is removed, and the coffee can be taken to market. Removing the husk in this semi-wet, semi-dry state reveals the beans' distinctive deep blue color. This processing method reduces acidity and increases body, producing a style unmistakably Indonesian.

Flavor Characteristics

Sweet herbs, cinnamon-type spice, and orange-citrus peel aroma, with a rich, thick sweetness and creamy walnut chocolate. The fruit acidity is restrained and gentle, and the fragrance carries a rich melon aroma. As the coffee cools, herbal notes emerge alongside light spice. The herbal aroma is thick and sweet, with grassy sweetness and a faint lemon peel fragrance. The flavor is clean, balanced, and refreshing, with milk chocolate and orange citrus that feel round and smooth, and a sweet, lingering aftertaste.

FrontStreet Coffee's Recommended Brewing Method

Dripper: KONO dripper

Water Temperature: 88°C

Grind Size: Small Fuji grinder setting 4

Brewing Method: Water-to-coffee ratio 1:14, with 17g of grounds. First pour 25g of water and let it bloom for 30 seconds. Second pour up to 238g of water, with a total extraction time of about 2:30 minutes.

Analysis

The KONO dripper has few ribs at the bottom, and the filter paper fits closely against the wall, which restricts airflow. This keeps water and grounds in contact and soaking longer inside the dripper, securing enough extraction time and extraction rate for a coarser grind. The grounds are fully extracted, which enhances the thick mouthfeel and concentrates the flavor.

Flavor

High balance and a clean, thick, solid mouthfeel, with a lasting dark chocolate aftertaste.

FrontStreet Coffee Recommendation

When you want the wet-hulled character described above at its cleanest, FrontStreet's PWN Golden Mandheling is the bottling many drinkers reach for. It comes from PWN, the Indonesian company also known as Pawani, whose Golden Mandheling is graded on unusually strict terms: beans must be 18 mesh or larger, and a 300g green-bean sample may contain fewer than three defective beans to meet the top G1 standard. Each lot then passes three rounds of hand sorting, which is what gives the coffee its clean cup and pronounced sweetness. Because supply is limited, PWN Golden Mandheling has long been proof of origin, and FrontStreet's listings show the PWN certificates and marked bags.

If you would rather start with the traditional Lintong side of Sumatra, FrontStreet's Lintong Mandheling is the everyday choice. Both it and the Golden Mandheling are roasted to a medium-dark level, which FrontStreet uses to keep the wild herbal note of wet-hulled Sumatra intact while bringing forward black chocolate and caramel.

For brewing, FrontStreet suggests pouring PWN Golden Mandheling by hand to get the most from it: 87-88°C water, 15g of grounds, a 1:15 ratio, and a grind about as coarse as granulated sugar. Use a three-stage pour -- 30 ml to bloom, 100 ml to lift the bed, then a gentle 95 ml through the center to finish -- which emphasizes the thick body, caramel sweetness, chocolate, and nut flavors.