Two questions on yeast. I buy the SAF instant yeast in the one pound bag. Now it takes a bit to use it all up so I have to store it. Before baking I test to make sure it is good. How does everyone store yeast if they buy a bigger size? Pantry, fridge, freezer? Now part B of the question is, if you store in fridge or freezer, do you take it out to warm up a bit? Or does none of that matter just measure and add warm liquid?