Which of the following best describes the process of Arabashiri?

Arabashiri refers specifically to the initial extraction process during the pressing of sake. This is a critical phase in sake production where the liquid known as "moromi" (the mash) is pressed to separate the sake from the solid lees. The term Arabashiri translates to "first run" or "first pressed," highlighting the freshness and unique flavor profile that this initial pressing yields.

During the pressing process, the moromi is subjected to pressure, allowing the sake to flow out while leaving behind the solid rice particles. The sake produced during Arabashiri is often considered exceptional due to its vibrant and pronounced flavors, often referred to as "young sake." This distinguishes it from the later extracts, which may have altered characteristics due to extended contact with the lees or additional processing.

The other options are related to different aspects of sake production: final filtration or refining stages, additions of distilled alcohol to manipulate flavor and aroma, and fermentation processes involving koji. However, none of these pertain to the initial extraction stage, making the choice regarding Arabashiri the most accurate.