You can store everything in the kit in the fridge to help increase shelf life. Grains after crushed should be used within a month. They can last longer with proper storage. Uncrushed grain will last even longer. Extract will keep for 3-4 months. But once again with proper storage it will last even longer. The yeast has a shelf life of 6-8 months. Dry yeast will last 1-2 years! Hops will last for a year in the freezer but will start breaking down bitterness after 4-6 months. Just like when you cook, using the freshest ingredients will produce the best tasting beer. So get brewin’!!!