You don't have to wait until summer to put food away for another day. Berries can be frozen whole. To remove field heat from my berries I put my haul straight into the freezer. An hour later I sort the stems and such and put in plastic, very easy with no waste. Bananas can be frozen without plastic. They last 4 months and are indispensable in cakes and smoothies. The best way to preserve ginger is to freeze it whole. I just grate frozen ginger into my recipes and but the remainder back in the freezer.