I have loved this stuff ever since I started playing football in High School. For you in the West with Smart and Final, you are lucky, that is the only place I could ever find the big ones, the ones that make 9 gallons!
When the family met in Montana in September of 2016 for my folks Memorial service, I had my oldest sister Karen and her husband Jeff bring me 4 cases. Had no idea how long they would last. The 4 on top are the end of that load.
You can get the little 2 gal. ones here, and even the 5 gallon I think, but the cost is some much more. So they went West to visit Jeffs family and brough me back another load, I ask for 4 cases, but they brought 6...Meh, works for me! So, I figure this load should get me to some where in 2019!
Bad thing is when you make your own...you can never go back! I bought some at the store the other day and it tasted like water!