At what percentage of the rice has been polished at the Daiginjo level?

At what percentage of the rice has been polished at the Daiginjo level?

• A. 30%
• B. 40%
• C. 60%
• D. 50%

Answer: (D)

Daiginjo is defined by how much of the rice grain remains after polishing, called the seimaibuai. For Daiginjo, the rice must be milled to 50% or less of its original size, meaning about half of each grain is removed to expose more of the core starch and reduce outside flavors. That makes 50% the key reference point for this level. A value like 60% remaining would place the wine in the Ginjo category, not Daiginjo. Values such as 30% or 40% are also Daiginjo-ready, but the standard marker used to identify Daiginjo is 50%.

Daiginjo is defined by how much of the rice grain remains after polishing, called the seimaibuai. For Daiginjo, the rice must be milled to 50% or less of its original size, meaning about half of each grain is removed to expose more of the core starch and reduce outside flavors. That makes 50% the key reference point for this level. A value like 60% remaining would place the wine in the Ginjo category, not Daiginjo. Values such as 30% or 40% are also Daiginjo-ready, but the standard marker used to identify Daiginjo is 50%.