title_body: How long does an open bottle of Sake last?
upvoted_answer: Split it into small aluminum containers and store it in the fridge. Fill it to the top so there is very little air in the container.  You can find kid sized 12 oz water bottles on sell for just a few bucks.  It should last weeks but best used in one week.
  
  There is also suction pumps and nitrogen.
  
  Temperature for drinking is personal taste.