I keep all but what I'm planning on using in the next week in the freezer too - have for years. I think it's cause I heard it will preserve it longer but that could be a wives tale.

But!! I have recently been hearing reports that freezing (or microwaving) food or water in plastic is bad because it releases toxins, specifically dioxin I think, from the plastic. It's one of the reasons the food industry is shifting back to paper products from styrofoam.

So in you are going to freeze, use glass containers.