It depends on how much food you are ordering at once. Since NomNomNow doesn't use any artificial preservatives in their food, it's best to only keep one week's worth of food in the fridge and put the rest in the freezer. Frozen meal packs take up to 48 hours to defrost, so once you're down to your last few days of food in the fridge, start moving some meal packs from the freezer to your fridge to defrost. Since the meal packs are vacuum sealed, they remain fresh for 6 months when unopened and frozen.