I haven't bought it in years, but I used to keep some in the pantry, unrefrigerated, all the time. Can you find out what the package says?

I don't think it should be refrigerated.I know it will cake if it isn't tightly closed,especially in humid environments.I put it in a zip lock bag and put the bag back in the original container and store it in the pantry.

Mom picked it up at the bulk store. There are instructions on how to measure out, but I didn't know about refrigeration.
It's in my cupboard, so it will stay there.

I use it in bread baking. Says nothing about refrigeration. I just keep it on the shelf.

Since I use it so seldom, I keep mine in my refrigerator. I would think it might be like just powdered milk it will go bad. I usually keep my powdered milk in my freezer as I do not use it much at all. Since it is a bigger box it takes up more room in my refrigerator. So I think if you use it often the shelf is fine, but if you are not using it much, the refrigerator and tightly closed.

Sue

I keep the powder on the shelf. Once it's mixed, I keep it refrigerated until used up. I love to soak chicken in buttermilk for making oven fried chicken.

If you mix it with something, then it will need to be refrigerated.

My can says refridgerate after opening. The brand is Saco.

Like mboston's, mine is Saco and says right on the top in bold letters "Refrigerate after opening for maximum shelf life".