
Tan Loon Chuan (63) shows the green coffee beans before roasting using the traditional charcoal oven at the Chuan Hoe Coffee Factory in Klang Selangor, Malaysia, on December 9, 2020. This traditional coffee factory has produced powder " Coffee O" for more than six decades.

Selected green coffee beans are being roasted using a traditional charcoal oven at the Chuan Hoe Coffee Factory in Klang Selangor, Malaysia, on December 9, 2020. The factory is one of the few others in Malaysia that insists on producing coffee grounds using the charcoal roasting method.

Tan Loon Chuan (63) checks the roasted coffee beans during the roasting process at the Chuan Hoe Coffee Factory in Klang of Selangor, Malaysia, on December 9, 2020.

Tan Loon Chuan (63) fries roasted coffee beans with sugar and margarine mixture at the Chuan Hoe Coffee Factory in Klang of Selangor, Malaysia, on December 9, 2020.

Tan Loon Chuan (63) checks the roasted coffee beans during the roasting process at the Chuan Hoe Coffee Factory in Klang of Selangor, Malaysia, on December 9, 2020.

Tan Loon Chuan (63) pours caramelized coffee beans into the blending machine after frying and cooling at the Chuan Hoe Coffee Factory in Klang Selangor, Malaysia, on December 9, 2020.

A worker is cooling the caramelized coffee beans after the frying process on a large tray at the Chuan Hoe Coffee Factory in Klang of Selangor, Malaysia, on December 9, 2020. "Kopi O", the Malaysian version of black coffee, is one of the locals' all-time favorites.

A worker cools roasted coffee beans on a large tray at the Chuan Hoe Coffee Factory in Klang Selangor, Malaysia, on December 9, 2020.

A worker pours white sugar into the big skillet caramelized before into the roasted coffee beans at the Chuan Hoe Coffee Factory in Klang of Selangor, Malaysia, on December 9, 2020.

63-year-old Tan Loon Chuan (R) pours white sugar into the big skillet caramelized before into the roasted coffee beans at the Chuan Hoe Coffee Factory in Klang of Selangor, Malaysia, on December 9, 2020.

The process of frying roasted coffee beans with sugar and margarine is seen before the grinding process at the Chuan Hoe Coffee Factory in Klang of Selangor, Malaysia, on December 9, 2020.

Tan Loon Chuan (63) fries roasted coffee beans with sugar and margarine mixture at the Chuan Hoe Coffee Factory in Klang of Selangor, Malaysia, on December 9, 2020.

Tan Loon Chuan (63) shows the result of roasted and caramelized coffee beans after the grinding process at the Chuan Hoe Coffee Factory in Klang Selangor, Malaysia, on December 9, 2020.

Tan Loon Chuan (63) pours caramelized coffee beans into the blending machine after frying and cooling at the Chuan Hoe Coffee Factory in Klang Selangor, Malaysia, on December 9, 2020.

Tan Loon Chuan (63) pours caramelized coffee beans into the blending machine after frying and cooling at the Chuan Hoe Coffee Factory in Klang Selangor, Malaysia, on December 9, 2020.