Base in Kyoto, Hirotomo DOI is a Japanese lacquer artist known for his unique approach to coffee and tea ceremonies, as well as his metal-core lacquerware. He is also known for his coffee ceremony, a pre-planned arrangement that ensures optimal conditions for brewing and serving coffee.
 
Hirotomo DOI graduated from the Wajima Lacquerware Research Institute in Ishikawa Prefecture and later moved his studio to Kyoto.  In his original concept of "Kohi Kaiseki" (Coffee Kaiseki), he demonstrates the entire process of brewing coffee, from grinding self-roasted coffee beans to serving, where he uses only his own works, including pots and cups. 
 
Design and Functionality of the Inner Curve
 
From the inner mid-section to the upper lip, the cup is subtly concaved following the outer design. When tilted, the coffee's flow slows down at this point, preventing it from reaching the back of the mouth too quickly. This design helps you experience the mild sweetness or delicate acidity of the coffee, as the back of the tongue is more sensitive to bitterness.
 
Enjoyment of Aroma
 
Another key feature of the cup is that it naturally covers the nose as you drink, allowing you to savor the coffee’s aroma while drinking. This enhances the overall sensory experience and contributes to a richer coffee-drinking ritual.
 
Stacking and Storage Benefits
 
The cups are designed to stack beautifully. This is not only aesthetically pleasing but also practical, allowing for easy storage, especially in small spaces.