What does the term Funa-shibori refer to?

Funa-shibori refers to the traditional method of pressing sake using a wooden box or funa, which allows the unfiltered sake to gently drip through the box as gravity acts on the mash. This method is distinct from modern pressing techniques, as it emphasizes the preservation of delicate flavors and aromas by avoiding excessive pressure. It is particularly associated with producing premium sake, as the gentle pressing process allows for better expression of the rice's characteristics and the nuances of fermentation.

The option regarding a specific sake rice type refers to varieties like Yamada Nishiki or Gohyakumangoku, which are essential in the brewing process but are not what Funa-shibori denotes. Brewing equipment encompasses various tools and machinery used in the sake-making process but does not specifically capture the unique pressing technique implied by Funa-shibori. Lastly, the mention of a style of sake served warm relates to serving temperature preferences rather than a method or pressing technique.