This sake still requires water and arroz (rice) to make sake. Once the water and rice are provided, it is just a matter of time before a barrel of sake is produced.
G&S Sake is one of those that is just for the RP aspects, currently providing no energy points for your avatar. Perhaps the creator will update it one day, and allow for it to give RP HUD energy point benefits just like we get in the real world when we yell "Kampai" and slam back a shot of tasty rice alcohol.
Until next time, keep your fields cared for!