You can cut the berries up, or leave them whole, as you like. Put them a freezer bagPack a freezer bag with the strawberries, and exclude as much as air as you can when you seal the bag.I love the FoodSavers (see this page for more information) with their vacuum sealing! I am not paid by them, but these things really work. If you don't have one, ziploc bags work, too, but it is hard to get as much air out of the bags. remove the air to prevent drying and freezer burn.