In two weeks we went through 1 1/2 containers of jam, I knew there was no way what I had was going to last us a year so I took everyone back to the berry patch to pick some more. This time we ended up with over 12 lbs of raspberries which ended up making 27 1/2 jars of jam. I am really hoping this will last us until next year, but it really seems to be going fast. Fingers crossed!!